EASY
7th ICSE
IMPORTANT
Earn 100

Calculate the number of atoms present in:
One molecule of .

Important Questions on Atomic Structure
MEDIUM
7th ICSE
IMPORTANT
Calculate the number of atoms present in:
One molecule of .

MEDIUM
7th ICSE
IMPORTANT
Complete the following table:
Name of Radical | Symbol | Valency |
Carbonate | divalent | |
Sulphate | trivalent | |
Ammonium | monovalent | |
Calcium | ||
Iron |

MEDIUM
7th ICSE
IMPORTANT
Complete the table by writing the formula or molecular formulae of the elements and their atomicity.
Name of the elements | Formula | Atomicity |
Bromine | ||
Phosphorus | ||
Sulphur | ||
Oxygen | ||
Magnesium | ||
Iodine |
