HARD
7th Tamil Nadu Board
IMPORTANT
Earn 100

Differentiate between atomic number and mass number.

Important Questions on Atomic Structure

EASY
7th Tamil Nadu Board
IMPORTANT
The _____ revolve around the nucleus.
HARD
7th Tamil Nadu Board
IMPORTANT
The atomic number of an element is 9, it has 10 neutrons. Find the element from the periodic table. What will be its mass number?
HARD
7th Tamil Nadu Board
IMPORTANT
Draw the atom structure and explain the position of the subatomic particles.
HARD
7th Tamil Nadu Board
IMPORTANT

The atomic number and the mass number of an element are 26 and 56 respectively. Calculate the number of electrons, protons and neutrons in its atom. Draw the structure.

HARD
7th Tamil Nadu Board
IMPORTANT

What are nucleons? Why are they called so? Write the properties of the nucleons.

HARD
7th Tamil Nadu Board
IMPORTANT
Define valency. What is the valency of the element with atomic number 8? What is the compound by the element with hydrogen?
MEDIUM
7th Tamil Nadu Board
IMPORTANT
An atom of an element has no electron, will that atom have any mass or not? Can an atom exist without electron? If so then give example.
HARD
7th Tamil Nadu Board
IMPORTANT
Find what is common salt. Name the elements present in it. Write the formula of the common salt. What are the atomic number and mass number of elements? Write the ions in the compound?