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Considering X-axis as the internucler ax...

Considering X-axis as the internucler axis, which out of the following atomic orbitals will from a sigma bond ?
`(a)1sand 1s" " (b) 1s and 2p_(x)" "(c )2p_(y)and2p_(y)" "(d)1s and2s.`

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To determine which of the given atomic orbitals will form a sigma bond when considering the X-axis as the internuclear axis, we need to analyze each option based on the characteristics of sigma bonds. ### Step-by-Step Solution: 1. **Understanding Sigma Bonds**: - Sigma bonds are formed by the head-on overlapping of atomic orbitals. For a sigma bond to form, there should be a single lobe interaction between the orbitals involved. 2. **Option (a): 1s and 1s**: ...
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