Question

(a) The 4f sub shell of an atom contains 12 electrons. What is the
maximum number of electrons having the same spin in it?
(b) Explain the meaning of 4p6.
(c) Write the electronic configuration of the atom with atomic
number 29.

Answer 1

b 4p6 means if p subshell has 6 electron it means it has fully filled orbital and so it's boiling pt and ionisation enthalpy is high I. e. it is very difficult to remove an electrons
c ) cu (copper ) has 29 atomic no and it's electronic configuration is 1s2 2s2 2p6 3s2 3p6 3d10 4s1