Number of electrons in penultimate shell are same is
`Cr,V`
`Cu,Zn`
`Ni,Co`
`Be,Ca`

Maximum number of electrons in the M shell

The number of electrons in the valence shell of calcium is:

Assertion: Shielding effect increases as we go down the group. Reason: More is the number of electrons in the penultimate shell, more is shielding.

With reference to period 3 of the periodic table - State: The number of electrons in the penultimate shell of the element with valency -1.

The number of unpaired electrons in Zn element is

Number of electrons in this energy shell is the same as the number of electrons in the valence shell.

An element 'X' has its electronic configuration of 'K' shell is (n-5)s^(2) and it has total number of electrons in its outermost, penultimate and antipenultimate shell are 2,8 and 25 respectively then find out total number of unpaired electrons in element 'X' in their ground state.

The number of unpaired electrons in Ni (CO)_(4) is

The number of unpaired electrons in Ni (CO)_(4) is

The number of unpaired electrons in Zn^(2+) is