Question

what is 2n^2 rule
define with example
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Answer 1

Answer:

This rule of arrangement of electrons according to the shell is known 2n2 rule where n means number of shell. For example: There is one proton in the nucleus of hydrogen atom, which moves in K shell path. It has no neutron. Helium atom contains 2 protons and 2 neutrons.

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Answer 2

2n^2 is d formula used to find the electronic configuration of elements where n denotes d number of shell. for example number of electrons in the k shell --> 2 × 1^2 = 2. number of electrons in the shell =

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