Nickel atom can lose two electrons to form `Ni^(2+)` ion. The atomic number of nickel is 28. From which orbital will nickel lose two electrons?

Options

A. s
B. p
C. d
D. f

Explanation

To determine from which orbital nickel loses two electrons to form the `Ni^(2+)` ion, we can follow these steps:

### Step 1: Determine the Atomic Number and Electronic Configuration
Nickel has an atomic number of 28, which means it has 28 electrons. The electronic configuration of nickel can be written as:
- 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁸ 4s²

### Step 2: Identify the Outermost Electrons
In the electronic configuration, the outermost shell is the 4th shell, which contains the 4s orbital. The 4s orbital has 2 electrons.
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