Atomicity

Q. 2g of oxygen contains number of atoms equal to that in (a) 0.5 g of hydrogen (b)4 g of sulphur (c)7 g of nitrogen (d) 2.3 g of sodium

Q.

Atomicity is the number of atoms present in a molecule.

1. True

2. False

Q.

The total number of chlorine atoms present in ferric chloride molecule, $FeC{l}_3$:

1. 2

2. 3

3. 4

4. 1

Q.

The molecules of an element, which have more than three atoms, are called _______ molecules.

Q.

What is the atomicity of Chlorine and Argon?

Q.

Fill in the blanks :
The atomicity of ozone is ________.

Q.

Ozone is a triatomic molecule.

1. True
2. False

Q.

Give one word answer for the following:

Elements having 4, 5, 6, 7 or 8 electrons are known as.

Q. Statement-1: Both $C{O}_2$ and $H_{2}O$ are molecules.
Statement-2: A molecule always contain atoms of the same elements.

1. Both the statements are true, and statement 2 is the corrent explaination for statement 1
2. Statement 1 is true but statement 2 is false
3. Statement 2 is true but statement 1 is false
4. Both the statements are true but statement 2 is not the correct explaination for statement 1

Q.

What is the atomicity of ozone?

1. 1

2. 2

3. 3

4. 4

Q.

What are radicals?

Q.

What is the atomicity of oxygen molecule and sulphur molecule?

Q.

How many molecules and atoms are present in $5O_2$?

1. 2, 4, 2 respectively

2. 2, 3, 4 respectively

3. 4, 2, 2 respectively

4. 2, 4, 3 respectively

Q. Sort the following in increasing order of atomicity.

1. $\text{He}$
2. ${\text{O}}_2$
3. ${\text{NH}}_3$
4. ${\text{N}}_2{\text{O}}_3$
5. ${\text{H}}_2{\text{SO}}_4$

Q.

Which of the following is/are a diatomic gas(es) at the room temperature?

1. (i), (iii), (iv), (vi)

2. (i), (ii), (iii), (v), (vi)

3. (ii), (iii), (v), (iv)

4. (v), (iv)

Q. Give the scientific reason for the following:

Q. Question 2
Which of the following statements is not true about an atom?
(a) Atoms are not able to exist independently
(b) Atoms are the basic units from which molecules and ions are formed
(c) Atoms are always neutral in nature
(d) Atoms aggregate in large numbers to form the matter that we can see, feel or touch

Q. what is atomicity . give example

Q. The total number of atoms present in $2C_6{H}_{12}{O}_6$ is:

1. 48
2. 12
3. 24
4. 36

Q.

The atomicity of Na is 1. What does it mean?

1. It can combine with only one element.

2. It exists as a single atom, unlike molecules.

3. Both A and B

4. The statement is incorrect. Its atomicity is 2.

Q.

Which of the following are Molecules?

(i) Oxygen gas

(ii) Argon

(iii)Ammonia

(iv) Helium

(v) Water

(vi) Sugar

1. i, iii, v, vi
2. i, iv, ii
3. iii, v, vi
4. ii, iv, v

Q.

Identify the number of atoms of oxygen present in $3HN{O}_3$

1. 6

2. 9

3. 3

4. 1

Q.

Give one example of a polyatomic molecule.

Q. Write the atomicities of the followin1.Hydrogen
2.nitrogen
3.phosphorous

Q.

Q. Which of the following statement is true?​

1. Molecules of an element are formed by different kinds of atom.​

2. Ozone is the molecule of an element.​

1. Only statement 1 is true​
2. Both statements are true​
3. Only statement 2 is true​
4. Both statements are false​