Molecular orbitals are formed by the overlap of atomic orbitals. Two atomic orbitals combine to form two molecular orbitals called bonding and antibonding `MO s`. The molecular orbitals are filled with electrons following the same rules as followed for filling of atomic orbitals. The molecular orbitals electronic configurations help us to calculate bond order when which give important information about bond strength and bond length.
Considering Z - axis as internuclear axis, which one of the following will be for sigma antibonding MO?
(i) `2p_(y)+2p_(y)" "2p_(x)-2p_(y)`
(iii) `2s+2p_(z)" "(iv) 2p_(z)-2p_(z)`

Explanation

To determine which of the given options corresponds to a sigma antibonding molecular orbital, we need to analyze the combinations of atomic orbitals provided in each option.

### Step-by-Step Solution:

1. **Understanding Molecular Orbitals**:
- Molecular orbitals are formed by the combination of atomic orbitals.
- There are two types of molecular orbitals: bonding and antibonding.
- Bonding orbitals are formed by the addition of wave functions (constructive interference), while antibonding orbitals are formed by the subtraction of wave functions (destructive interference).
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