Question

How many electrons can be accommodated at most n =4,s=1

Answer 1

Answer:

In the nth quantum shell, there are n subshells, n^2 orbitals, and it can have a maximum of 2n^2 electrons, since each orbital can hold a maximum of 2 electrons with opposing spin, as per Pauli’s exclusion rule.

So for quantum shell, n=4:

There are 4 subshells, namely s,p,d and f.

4^2= 16 orbitals. One s orbital, 3 p orbitals, 5 d orbitals and 7 f orbitals.

And 32 electrons, since, as aforementioned, each orbital can possess a maximum number of two electrons.

The electronic configuration is:

1s2

2s2 2p6

3s2 3p6 3d10

4s2 4p6 4d10 4f14

The first element in periodic table with a fully filled fourth shell is Ytterbium (atomic number 70). However, it also has filled 5s2, 5p6 and 6s2 orbitals.

Answer 2

Answer:

There are 4 subshells, namely s,p,d and f. 4^2= 16 orbitals. One s orbital, 3 p orbitals, 5 d orbitals and 7 f orbitals. And 32 electrons, since, as aforementioned, each orbital can possess a maximum number of two electrons.