Question

write niels boher 2(n) rule what does it explain

Answer 1

its state that the electron are arranged in form 2n^2 where n is no. of shell

Answer 2

Hey !


▶▶Neil Bohr put forward the postulate that only a certain orbits, known as discrete orbits, are allowed inside an atom.

▶The electrons are distributed in it as per the energy available in them.

▶The capacity is calculated by the formula ---
$2 {n}^{2}$
where n stands for no. of orbit.

▶ For eg--; For the third orbit/shell = 2(3)²
=2*9
=18
So, the third orbit can accommodate only 18 electrons in it.

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