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Question

Among the equations given below, ΔH of which one is equal to IE1 of Ba?

A
Ba(g)+eBa(g)
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B
Ba(g)Ba+(g)+e
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C
Ba(s)Ba+(g)+e
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D
Ba(g)Ba+2(g)+2e
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Solution

The correct option is B Ba(g)Ba+(g)+e
IE1 is the energy required to remove an electron from the valance shell of an isolated and gaseous atom of Ba.

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