Number of
Protons
Number of
Neutrons
Atomic
Number
Mass
Number
Element
(symbol)
20
20
A
B
С
9
D
E
19
F
Using the periodic table, complete the table to describe each atom. Type in your answers.
А
B
С
1 0
]

Number OfProtonsNumber OfNeutronsAtomicNumberMassNumberElement(symbol)2020AB9DE19FUsing The Periodic

Answers

Answer 1
Mass plus atomic and number


Related Questions

What is the formula for calculation of acceleration?

Answers

Answer:

see picture for answer

Explanation:

please mark me brainliest please

What is our cosmic address??

Answers

Sydney Observatory, 1003 Upper Fort St, Millers Point, Sydney, NSW, Australia
Our full Cosmic Address: Sydney Observatory, 1003 Upper Fort St, Millers Point, Sydney, NSW, Australia, Earth, The Solar System, Orion Arm, The Milky Way, Local Group, Virgo Cluster, Virgo Super-Cluster, Universe … One?

HELLO MAY SOMEONE PLZ HELP ME ON THIS!!!;$7&:

Answers

Answer:

Variable data is defined as information and figures used to build control charts. Variable data can be used to create average (X-bar) charts, range charts, and sample standard deviation charts or "S-charts."

7. In an atom, electrons revolve around the nucleus in their shell. The K shell can only accommodate 2 electrons while L shell can accommodate 8 electrons. Give​

Answers

Now lets she s-subshell structure .

Take an element Berylium

[tex]\huge{\overset{1s^2}{\boxed{\uparrow\downarrow}}\overset{2s^2}{\boxed{\uparrow\downarrow}}}[/tex]

You can see the S-orbital has only space for 2electrons .

So K shell has 2electrons

Come to p-orbital

Take an element Neon

[tex]\huge{\overset{1s^2}{\boxed{\uparrow\downarrow}}\overset{2s^2}{\boxed{\uparrow\downarrow}}\overset{2p^6}{\boxed{\uparrow\downarrow}\boxed{\uparrow\downarrow}\boxed{\uparrow\downarrow} }}[/tex]

The 2 means its L shell .

It has 8 electrons only and full filled .

Hence L shell can have only 8electrons

please help me with my question ​

Answers

Answer:

b

Explanation:

because I had that on my homework and got it correct

b

Explanation:

because I had that on my homework and got it correct

Which is an example of a polymer?

Answers

Answer:

A: Cellulose

Explanation:

Cellulose in paper and tree

What did the Aboriginal people use to weave dilly bags?

Answers

Answer:

This bag has been made from introduced materials, but before foreign fibres were used dilly bags were made from bark, leaves, stems, roots, human hair, animal fur and animal sinew.

Convert rate of 271.7 gallons/min to an equivalent rate of cL/week. Present answer in scientific notation rounded to the proper number of significant figures.

Answers

Answer:

Convert the rate of 271.7 gallons/min to an equivalent rate of cL/week. Present your answer in scientific notation rounded to the proper number of sig figs.

Explanation:

Given 10 gram samples of LiCl, LiBr, LiF, LiI, place the samples in order of least to greatest number of atoms of lithium, Li.

Answers

The given sample of 10 grams shows the mass of the following compounds.

(LiCl, LiBr, LiF, LiI).

To arrange them in hierarchical order from the least to the greatest, we need to determine their respective number of moles because it is directly proportional to their atomicity.

By using the formula:

[tex]\mathbf{Number \ of \ moles = \dfrac{mass}{ molar \ mass}}[/tex]

For LiCl, its molar mass = (42.39) g/mol

[tex]\mathbf{Number \ of \ moles = \dfrac{10 \ g}{42.39 \ g/mol}}[/tex]

number of mole for LiCl =  0.2359 moles

For LiBr, its molar mass = (86.85) g/mol

[tex]\mathbf{Number \ of \ moles = \dfrac{10 \ g}{86.85 \ g/mol}}[/tex]

number of mole for LiBr =  0.1151 moles

For LiF, its molar mass = (25.94) g/mol

[tex]\mathbf{Number \ of \ moles = \dfrac{10 \ g}{25.94 \ g/mol}}[/tex]

number of mole for LiF = 0.3855 moles

For LiI, its molar mass = (133.85) g/mol

[tex]\mathbf{Number \ of \ moles = \dfrac{10 \ g}{133.85 \ g/mol}}[/tex]

number of mole for LiI = 0.0747 moles

Therefore, we can conclude that the samples in hierarchical order from the least to the greatest is as follows:

LiI < LiBr < LiCl < LiF

Learn more about atomic numbers here:

https://brainly.com/question/17274608?referrer=searchResults

Explain why changes of state are physical changes.

Answers

Solution: Change in state of matter is a physical change because of the physical condition and appearance changes but not the chemical composition.

The collection of which of the following gases involves a catalyst?
A)oxygen
B)ammonia
C)carbon dioxide

Answers

Answer:

Ammonia

Explanation:

I believe that ammonia is the correct answer to this question.

How much silver chloride is precipitated when 25.0 g of calcium chloride and 25.0 g of silver nitrate are mixed together in a beaker of water?​

CaCl2 + 2AgNO3 --> Ca(NO3)2 + 2AgCl

Answers

Answer:

21.09 g of AgCl

Explanation:

Hopefully the picture is clear and the method is understandable.

For more information go to

https://socratic.org/questions/5631d10b11ef6b4609a78ee2

Back page anwsers of adobe sisters recap sheet

Answers

Answer:

I'm sorry, you didn't post the pictures.

Can someone help me out on this ♡​

Answers

Explanation:

Actually, the diagram showned in the picture gave you some hints.

Moving every one block to the left indicates 10 times the value of the symbol than the previous one.

For instance,

[tex]1\text{ km}=10^1\text{ hm}=10^2\text{ dam}=10^3\text{ m}[/tex]

Take the first question as example, since "k" is 9 blocks from the left of mu (u),

[tex]1 \text{ kg}=10^9 \text{ }\mu\text{g}[/tex]

[tex]\text{So }.000078\text{ kg}=.000078\times10^9 \text{ }\mu\text{g}=7.8\times10^{-5}\times10^9 \text{ }\mu\text{g}=7.8\times 10^4\text{ }\mu\text{g}[/tex]

Similarly,

[tex]1 \text{ cL}=10^{-2} \text{ L}[/tex]

[tex]\text{So }34800\text{ cL}=34800\times10^{-2} \text{ L}=3.4800\times10^{4}\times10^{-2} \text{ L}=3.48\times 10^2\text{ L}[/tex]

[tex]1 \text{ Mm}=10^{3} \text{ km}[/tex]

[tex]\text{So }.0283\text{ Mm}=.0283\times10^{3} \text{ km}=2.83\times10^{-2}\times10^{3} \text{ km}=2.83\times 10^1\text{ km}[/tex]

2. Choose the best answers
1. A spon used to open the lid of a can is...
(1) first class lever
(ii) second class lever
(ii) thin class lever
(i) none of them.

2. Which simple machine is used to right the screw with screw driver?
(1) Lever (ii) Wheel and Axle (ii) inclined plane (iv) Wedge

3.Which category of the simple machine is autotly Kito
(i) Lever (ii) Wheel and Axle (iii) Pulley (iv Wedged.

4. Which type of the simple machine is the axe!
(1) Lever (2) Screw (3) Wedge (4) Inclined plane

5. Which type of the simple machine is winding road in hilly
(i) Lever (ii) Wedge (iii) Serew (iv) Inclined plane​

Answers

Answer:

4 ans is 3,5ans is iv i know only this much

which step in the scientific method has an if/then statement

Answers

independent and dependent variables.

1)

Now it's time to state your hypothesis. ...

2) The hypothesis is often written using the words "IF" and "THEN." For example, "If I do not study, then I will fail the test." The "if' and "then" statements reflect your independent and dependent variables.

Someone plz help me :(

Answers

The answer is A. Sorry if I am wrong.


The number of protons in one atom of an element determines the atom's ____________
and the number of electrons determines ___________
of an element.

Answers

Answer:

the number of protons in one atom of an element determines the atom's identity, and the number of electrons determines its electrical charge

Explanation:

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The energy required to remove the third electron from a dipositive ion is

Answers

The energy required is Ionization energy

Third ionization energy

Does dried coconut give blue black color when iodine solution is added in it.

Answers

Answer:

I cant give a  100% answer but it will give a black color  when low starch

Explanation:

Iodine test is used to determine the presence of starch in food items. If iodine is added to any food item and it causes the food item to turn to a blue-black color

mark brainiest please

4. Write the electronic configuration of first 20 elements in the periodic table.

Answers

Hydrogen: 1

Helium: 2

Lithium: 2•1

Beryllium:2•2

Boron: 2•3

Carbon: 2•4

Nitrogen:2•5

Oxygen:2•6

Fluorine: 2•7

Neon:2•8

Sodium: 2•8•1

Magnesium: 2•8•2

Aluminium: 2•8•3

Silicon: 2•8•4

Phosphorus: 2•8•5

Sulfur: 2•8•6

Chlorine: 2•8•7

Argon: 2•8•8

Potassium: 2•8•8•1

Calcium: 2•8•8•2

Please give me brainliest, I spent a lot of time doing this

Use the word stable to explain why the alkali metals tend to lose 1 valence electron.

Answers

Answer:

becoz vvv is always with you

Answer:

Alkali metals have one valence electron on their outer shell. They are more stable when they have eight valence electrons so they tend to loose that one electron and obtain a full octet, therefore become stable

If the cardboard square has a light on it what do observe

Answers

Answer:you observe the light?

Explanation:

What happens to acceleration when mass is increased

Answers

Answer:

If you increase the mass at a given force the rate of acceleration slows. Therefore, mass is inversely proportional to acceleration. ... Force is directly proportional to acceleration (force ~ acceleration) As force increases acceleration increases.

acceleration slows down .

Explanation:

if we increase the mass at a given force the rate of acceleration slows

2.56g of impure copper(ii) sulphate sample was dissolved in water and precipitated with excess copper hydroxide solution. if 1.245g of copper (ii)hydroxide was obtained, what is percentage of copper(ii) sulphate in the impure sample

Answers

Since we know that 1.245g of Cu(OH)2 was obtained after the solid precipitated in water, it means that the remaining has to be CuSO4. Thus, we can take the difference between the two masses to get the mass for CuSO4.

After that, divide the mass of CuSO4 by the overall mass of the impure substance, multiply it by 100, and you will get the percentage of purity.

How many kilograms are in one teragram?

Answers

Answer:

0.0001 Tg 100000 kg

0.001 Tg 1000000 kg

0.01 Tg 10000000 kg

0.02 Tg 20000000 kg

Explanation:

write down the importance of solution in our daily life in any 4 points​

Answers

Explanation:

Four importances :

1. Solution of tea leaves, water and sugar is used to make tea

2. Solutions of the chemicals are used in labrotary

3. The drinks that we take are also a kind of solution

4. The air is also a solution of different gases

7) Explain how the atomic number of an element identifies the element.

Answers

Answer:

The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of every atom of that element. The atomic number uniquely identifies a chemical element. ... The sum of the atomic number Z and the number of neutrons N gives the mass number A of an atom.

Answer:

Atoms of each element contain a characteristic number of protons. In fact, the number of protons determines what atom we are looking at (e.g., all atoms with six protons are carbon atoms); the number of protons in an atom is called the atomic number.

Explanation:

4. Write down the differentiate between a. Atom and molecules​

Answers

Answer:

Atoms are single neutral particles. Molecules are neutral particles made of two or more atoms bonded together.

Explanation:

Atom refers to the smallest constituent unit of a chemical element. Molecules refer to a group of two or more atoms that are held together due to chemical bonds.

Answer: Atoms are single neutral particles while molecules are neutral particles made of two or more atoms bonded together

A sample of a compound that contains only the elements C, H, and N is completely burned in O2 to produce 44.0 g of CO2, 45.0 g of H2O, and some NO2 . A possible empirical formula of the compound is

Answers

Explanation:

what you have to do is to multiply the given grams with the ratio of grams of that certain element in it's full compound in order to isolate the compound and get the element.

because the question did not specify how many grams of NO2 is formed, we can assume that the mass is neglegible, thus 1 mole was assigned to Nitrogen.

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