EASY
7th ICSE
IMPORTANT
Earn 100

What is variable valency? Give two examples of elements showing variable valency.

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 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

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.

Sulphur

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.

Neon

EASY
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 4 - Atoms, Molecules and Radicals>EXERCISE>Q 13
An element belongs to group VA. What would be its valency? Name two such elements.
MEDIUM
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 4 - Atoms, Molecules and Radicals>EXERCISE>Q 14
An element belongs to group II. What would be its valency? Write the formulae of molecules of compounds it will form with elements in VA, VIA and VIIA groups.
EASY
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 4 - Atoms, Molecules and Radicals>OBJECTIVE TYPE QUESTIONS>Q 1
Atoms are _____. (neutral / electrically positive)
EASY
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 4 - Atoms, Molecules and Radicals>OBJECTIVE TYPE QUESTIONS>Q 1
An ion with positive charge is called _____.