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The IE(1) of C atom is greater than that...

The `IE_(1)` of `C` atom is greater than that of boron `(B)` atom, whereas the reverse is true for `IE_(2)`. Explain?

Text Solution

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From left to right in the periodic table, the ionisation energy increases, therefore, the first ionisation energy of carbon atom is greater than that of boron.
The second ionisation energy of boron is greater than that of carbon because after losing one electron, boron acquires a stable electronic configuration.
`B(Z=5) rArr 2s^(2) 2p^(1)`
`B^(o+)rArr 2s^(2) 2p^(0)`
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