Question

Atomic number on copper is 29. T he number of electrons in the d subshell and last sub shell are ....&...respectevily

Answer 1

Answer:

10 and 1 respectively

Explanation:

In general, Copper should have EC(electronic configuration) as 1s2 2s2 2p6 3s2 3p6 4s2 3d9

But, the difference between the energy levels of 4s and 3d orbital are very less.

So, one electron jumps from 4s to 3d to gain more stability and its EC becomes 1s2 2s2 2p6 3s2 3p6 4s1 3d10.

HOPE IT IS HELPFUL