Which among the following element has the lowest value of ionization energy ?

M g

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C a

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B a

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S r

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Solution

The correct option is C $B a$
We know that the ionization energy decreases from top to bottom in a group. This is because as we move down the group, the atomic size increases and hence the force of attraction towards the valence electrons decreases.
In the above scenario, barium has the least ionization energy compared to the other elements.

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Similar questions

B a < S r < C a

S^{2 -} < S < S^{2 +}

C < O < N

M g < A l < S i

(1) B a < S r < C a

(2) S^{2 -} < S < S^{2 +}

(3) C < O < N

(4) M g < A l < S i

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