EASY
7th ICSE
IMPORTANT
Earn 100

The sodium ion is written as Na+ and the sulphate ion is written as SO42-. What is the formula of sodium sulphate?

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Important Questions on Atomic Structure

EASY
7th ICSE
IMPORTANT
Inspired Chemistry-7>Chapter 4 - Atomic Structure>CHECKPOINT>Q 1
There are 181 elements in the periodic table.
EASY
7th ICSE
IMPORTANT
Inspired Chemistry-7>Chapter 4 - Atomic Structure>CHECKPOINT>Q 2
Neutrons and protons contribute to the mass of an atom.
EASY
7th ICSE
IMPORTANT
Inspired Chemistry-7>Chapter 4 - Atomic Structure>CHECKPOINT>Q 3
Some atoms are capable of independent existence.
EASY
7th ICSE
IMPORTANT
Inspired Chemistry-7>Chapter 4 - Atomic Structure>CHECKPOINT>Q 4
The atomicity of a molecule cannot exceed four.
EASY
7th ICSE
IMPORTANT
Inspired Chemistry-7>Chapter 4 - Atomic Structure>CHECKPOINT>Q 5
Only metals exhibit variable valency.
EASY
7th ICSE
IMPORTANT
Inspired Chemistry-7>Chapter 4 - Atomic Structure>CHECKPOINT>Q 6
Elements in the same group of the periodic table have the same valency.
EASY
7th ICSE
IMPORTANT
Inspired Chemistry-7>Chapter 4 - Atomic Structure>CHECKPOINT>Q 1

Define the following:

atom

EASY
7th ICSE
IMPORTANT
Inspired Chemistry-7>Chapter 4 - Atomic Structure>CHECKPOINT>Q 2

Define the following:

subatomic particle