Question

5) Explain with examples -
a)Atomic number
b)Atomic mass
c)Isotopes
d) Isobars​

Answer 1

Answer:

a) atomic no is the total no of protons present in the nucleus of an atom. it ia also equal to the no of elections for a neutral atom. Ex- atom no of sodium is 11.

b) Mass no is the no of protons and neutrons in the nucleus taken together. for example, mass no of sodium is 23g/mol.

c) Isotopes are elements with the same atomic no but different mass no.

d) Isotopes are elements which have different atomic no but the same mass no. They are different chemical elements. Ex, iron, and nickel both have mass no