Total no of orbital containing electron in Ni (28)atom in ground state is

Number of Orbitals in Ni Atom:
Ni (Nickel) atom has 28 electrons. In its ground state, these electrons are distributed among different orbitals based on the Aufbau principle and the Pauli exclusion principle.

Orbital Distribution in Ni Atom:
- The electron configuration of Ni is 1s2 2s2 2p6 3s2 3p6 4s2 3d8.
- The 1s orbital can hold a maximum of 2 electrons, the 2s and 2p orbitals can hold 2+6 = 8 electrons, the 3s and 3p orbitals can hold 2+6 = 8 electrons, and the 4s orbital can hold 2 electrons.
- The 3d orbital can hold a maximum of 10 electrons, but in the case of Ni, it only has 8 electrons in the 3d orbital.

Total Number of Orbitals with Electrons:
- In Ni atom, there are a total of 5 types of orbitals: 1s, 2s, 2p, 3s, 3p, and 3d.
- The 1s orbital has 2 electrons, the 2s and 2p orbitals each have 8 electrons, the 3s and 3p orbitals each have 8 electrons, and the 3d orbital has 8 electrons.
- Therefore, the total number of orbitals containing electrons in Ni atom is 6 (1s, 2s, 2p, 3s, 3p, 3d).