Question

what is the period number of element whose filling up sub shells are 7s, 7f, 6d,7p​

Answer 1

Answer:

it will lies in 7th period

as its last electron enters in 7p group

here 7 indicates the period information

i hope you understand

Explanation:

if you give the detail of no.of elctron present

then we can also find the group

hole its help

plz mark as brainest

Answer 2

Explanation:

The aufbau principle, from the German Aufbauprinzip (building-up principle), also called the aufbau rule, states that in the ground state of an atom or ion, electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels. For example, the 1s subshell is filled before the 2s subshell is occupied. In this way, the electrons of an atom or ion form the most stable electron configuration possible. An example is the configuration 1s2 2s2 2p6 3s2 3p3 for the phosphorus atom, meaning that the 1s subshell has 2 electrons, and so on.