Question

what is nearest to the neucleus​

Answer 1

Explanation:

1. 4f is closer to nucleous and not 6s.

2. But still 6s fills first because aufbau rule states that electrons fill first in orbitals with lower energy (i.e. lower value of sum of principal quantum number and azimuthal quantum number).

3. Don't confuse with energy, the one with lower principal quantum number will be inner.

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Answer 2

Answer:

k shell

Explanation:

in an atom k shell is the nearest to nucleus..