Following statements regarding the periodic t | vedclass

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(B) For alkali metals $(Group \ 1)$,reactivity increases down the group because the ionization enthalpy decreases,making it easier to lose the valence

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In alkali metals the reactivity increases but in the halogens it decreases with increase in atomic number down the group

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(B) For alkali metals $(Group \ 1)$,reactivity increases down the group because the ionization enthalpy decreases,making it easier to lose the valence electron. For halogens $(Group \ 17)$,reactivity decreases down the group because the electron gain enthalpy becomes less negative,making it harder to gain an electron. Therefore,in alkali metals,reactivity increases,and in halogens,it decreases with an increase in atomic number down the group.

Following statements regarding the periodic trends of chemical reactivity of the alkali metals and the halogens are given. Which of these statements gives the correct picture?

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