Isotopes

Author:R P Rana
8th ICSE
IMPORTANT

Important Questions on Isotopes

MEDIUM
IMPORTANT
Its All About Science - Chemistry>Atomic Structure>Isotopes> Q 1

What do you understand by isotopes? Give one example.

EASY
IMPORTANT
Its All About Science - Chemistry>Atomic Structure>Isotopes> Q 2

Define the term isotope.

EASY
IMPORTANT
Its All About Science - Chemistry>Atomic Structure>Isotopes> Q 3

All the atoms of hydrogen have same atomic number and same mass number.
 

MEDIUM
IMPORTANT
Its All About Science - Chemistry>Atomic Structure>Isotopes> Q 4

Choose from the table letters (A to E) that represent a pair of isotope

Element Neutron Proton Electron
A 22 18 18
B 18 17 17
C 10 9 9
D 7 7 7
E 20 17 17

MEDIUM
IMPORTANT
Its All About Science - Chemistry>Atomic Structure>Isotopes> Q 5

Chlorine is an element with atomic number 17. It has two isotopes having mass numbers 35 and 37.

Complete the following table.

Isotope 

 No.of electrons No.of protons No.of neutrons
Cl3517 17 - 18
Cl3717 17 17 -

MEDIUM
IMPORTANT
Its All About Science - Chemistry>Atomic Structure>Isotopes> Q 6

Chlorine is an element with atomic number 17. It has two isotopes having mass numbers 35 and 37.

What is meant by the term atomic number?