Atomicity

Q.

What is the atomicity of phosphorus?

Q.

What are monoatomic and diatomic elements? I

Q.

The atomicity of oxygen is 2. What does it mean?

1. It has two electrons in its first shell

2. It can combine with the elements having valency 2

3. It has two different valencies

4. It has two atoms in its molecules

Q.

Atomicity of phosphorus molecule is

1. 1

2. 3

3. 2

4. 4

Q. Which of the following molecules of elements has the highest atomicity?

1. Sulphur
2. Phosphorus
3. Oxygen
4. Nitrogen

Q. Why are the properties of different compounds so different from each other?

Q. What is the difference between an atom and an element

Q.

What is the atomicity of sodium?

Q.

____ are atoms of different elements which have the same number of nucleons but different atomic numbers.

Q.

The atomicity of the element oxygen is

1. 1

2. 3

3. 2

4. 4

Q. The atomicity of $FeC{O}_3$ is ________.

1. six
2. four
3. three
4. five

Q.

Name two tetravalent cations with their formulae and valencies.

Q.

$pH$ of an aqueous solution is $5.5$. The hydroxyl ion concentration in the solution would be

1. $-5.5\mathrm{M}$

2. $-8.5\mathrm{M}$

3. ${10}^{-8.5}\mathrm{M}$

4. ${10}^{8.5}\mathrm{M}$

Q.

Which of the following is/are triatomic?

1. F₂

2. N₂O

3. C₂H₆

4. All of these

Q. Arrange the following in the increasing order of their atomicity:
Ozone, Carbon monoxide, and Ammonia

1. Ammonia < Ozone < Carbon monoxide
2. Ozone < Ammonia < Carbon monoxide
3. Ozone < Carbon monoxide < Ammonia
4. Carbon monoxide < Ozone < Ammonia

Q.

The atomicity of FeCO₃ is ______.

1. five
2. six
3. four
4. three

Q.

Atomicity of a molecule depends on the ___.

1. total valency of the elements present in a molecule.

2. number of elements combining together to form a molecule.

3. sum of the atomic number of the element present in an atom.

4. number of atoms of an element present in a molecule.

Q. Arrange the following in ascending order of their atomicity:
Oxygen, Sulphuric acid and Ammonium chloride.

1. Oxygen, Sulphuric acid, Ammonium Chloride.

2. Oxygen, Ammonium Chloride, Sulphuric acid.

3. None of these

4. Sulphuric acid, Ammonium Chloride, Oxygen.

Q.

Atomicity of the oxygen molecule is 1.

1. True

2. False

Q.

${\mathrm{S}}_8$ is an example of_______molecule.

Q.

Give the atomicity of PH_3.

Q.

Atoms of certain elements combine to form molecules of that element.

1. True
2. False

Q.

Arrange the following in ascending order of their valency

Boron, Beryllium and Lithium.

1. Sulphuric acid, Ammonium Chloride, Oxygen.

2. Oxygen, Sulphuric acid, Ammonium Chloride.

3. Oxygen, Ammonium Chloride, Sulphuric acid.

4. None of these

Q.

Define the term atomicity.

Q. Explain monoatomic, diatomic, and triatomic molecules.

Q.

Answer in one word/a few words.

The number of atoms contained in a molecule of an element.

Q.

Which of the following represents a correct chemical formula ? Name it.

1. $\mathrm{CaCl}$

2. ${\mathrm{BiPO}}_4$

3. ${\mathrm{NaSO}}_4$

4. NaS

Q.

Atomicity not explained in atomic structure chapter by Byju. So concept uncleared

Q.

What will be the atomicity of:

a) The molecule which we consume during respiration and during photosynthesis it is released.

b) The red coloured element which we use in matchboxes.

c) The pale blue gas which forms a layer that absorbs the sun's UV radiation.

1. 2, 3, 4 respectively

2. 4, 2, 2 respectively

3. 2, 4, 3 respectively

4. 2, 4, 2 respectively

Q. The atomicity of ${\text{FeCO}}_3$ is:

1. 5
2. 6
3. 4
4. None of the above