Which set has the same number of unpaired electrons in their ground state?

Which set has the same number of s -electrons?

Which of has the highest number of unpaired electrons?

Which set has the same number of s electrons?

The atomic nụmber of the element with the maximum number of unpaired 2p electrons in the ground state is

Which has maximum number of unpaired electrons?

Number of unpaired electrons in the ground state of beryllium atom is

Which has minimum number of unpaired d-electrons ?

State the number of unpaired electrons in Ni^(2+) :

The element of 4th period of the periodic table having maximum number of unpaired electrons in its ground state is