Question

the last electron was filled in 3p and its subshell electronic configuration is 3p⁴​

Answer 1

SO the electronic configuration is, 1s^2 2s^2 2p^6 3s^2 3p^4

Total electrons here = 2 + 2 + 6 + 2 + 4 = 16 electrons = Atomic Number is 16

So the element must be Sulphur (s)

Hope it helped u :)