EASY
7th ICSE
IMPORTANT
Earn 100

Write the molecular formula of:

Magnesium nitride.

Important Questions on Atoms, Molecules and Radicals

EASY
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 4 - Atoms, Molecules and Radicals>EXERCISE>Q 10

The valency of sodium is one. Write the molecular formula for the given compound of sodium.

Sodium oxide.

EASY
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 4 - Atoms, Molecules and Radicals>EXERCISE>Q 10

The valency of sodium is one. Write the molecular formula for the following compounds of sodium.

Sodium sulphate.

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7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 4 - Atoms, Molecules and Radicals>EXERCISE>Q 10

The valency of sodium is one. Write the molecular formula for the following compounds of sodium.

Sodium carbonate.

EASY
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 4 - Atoms, Molecules and Radicals>EXERCISE>Q 10

The valency of sodium is one. Write the molecular formula for the following compounds of sodium.

sodium hydroxide.

EASY
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 4 - Atoms, Molecules and Radicals>EXERCISE>Q 10

The valency of sodium is one. Write the molecular formula for the following compounds of sodium.

Sodium nitrate.

EASY
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 4 - Atoms, Molecules and Radicals>EXERCISE>Q 11
What is variable valency? Give two examples of elements showing variable valency.
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7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 4 - Atoms, Molecules and Radicals>EXERCISE>Q 12

Give the group number of the following element present in the periodic table.

Magnesium

EASY
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 4 - Atoms, Molecules and Radicals>EXERCISE>Q 12

Give the group number of the following element present in the periodic table.

Carbon