1 Answer
Solution :-
(a) Isotopes: Isotopes are atoms which have the same number of protons, but the number of neutrons differs. This leads to the variation in mass number too.
Example: Carbon molecule exists as 6C12 and 6C14 but when their electronic configuration is noticed, both have K-2; L-4
(b) Isobars: Isobars are atoms which have the same mass number but differ in the atomic number. The electronic configuration of an isobar pair is as follows,
Example: Electronic configuration of 20Ca40 - K-2; L-8; M-8; N- 2 Electronic configuration of 18Ar40 - K-2; L-8; M-8
Answered by Shivani Kumari | 2 years agoRelated Questions
Which one of the following is a correct electronic configuration of Sodium?
(a) 2, 8
(b) 8, 2, 1
(c) 2, 1, 8
(d) 2, 8, 1
Number of valence electrons in Cl– ion are:
(a) 16
(b) 8
(c) 17
(d) 18
Isotopes of an element have
(a) The same physical properties
(b) Different chemical properties
(c) Different number of neutrons
(d) Different atomic numbers.
Rutherford’s alpha – particle scattering experiment was responsible for the discovery of
(a) Atomic nucleus
(b) Electron
(c) Proton
(d) Neutron