Chemistry, asked by jaatsherawat2000, 5 months ago

1. Assertion: Mass of an atom is mainly of the nucleus
Reason: Nucleus contains both prof ons and neutrons.

Answers

Answered by Anonymous

Answer:

Explanation:

In any given period, the noble gas element has highest ionization enthalpy. The valence shell of noble gases is completely filled. This closed shell electronic configuration is very stable. Large amount of energy is required to remove an electron from a completely filled outermost shell

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