Question

8. Explain with examples (i) Atomic number,
(ii) Mass number, (iii) Isotopes and iv)
Isobars. Give any two uses of isotopes. (NCERT)​

Answer 1

For example, mass number of sodium is 23 g/mol. iii) Isotopes are elements with the same atomic number but different mass numbers. Example, hydrogen has 3 isotopes - protium (1H1), deuterium (2H1) and tritium (3H1). iv) Isobars are elemnts which have different atomic numbers but the same mass number.

Hopefully this helps you

Answer 2

Answer:

(1) Atomic Number :- Atomic Numbers can be define as the number of protons present in the Nucleus of an Atom. It is denoted by "Z".

Ex:- Number of Protons in Carbon is 6. Hence, It Atomic Number is 6.

(2) Mass Number:- Mass Number can be define as the sum of Number of Protons and Number of Neutrons in the Nucleus of an Atom. It is denoted by "A".

Ex:- Number of Protons in Carbon is 6 & Number of Neutrons in Carbon is 6.

Hence, Mass Number is 12.

(3) Isotopes :- Isotopes are define as the Elements having Same Atomic Number but different Mass Number.

(4) Isobars:- Elements having Same Atomic Mass but different Atomic Number are said as Isobars.

USES OF ISOTOPES:-

☆Used as tracers for diagnostic purposes.

☆ Used as Medicine.