Which of the following is the most powerful reducing agent in the gas

1.	Which of the following is the most powerful reducing agent in the gas phase ?A. CsB. LiC. KD. Na
Answer» Correct Answer - A The tendency of an element to lose electrons in the gas phase is measured in terms of ionization enthalpy. Lower the `Delta_(i)H`, greater the tendency to lose electrons, stronger the reducing character, and higher the reactivity of the element. Since `Delta_(i)H` decreases down the group, reducing character (or reactivity in the gas phase) increases from Li to Cs : `Li lt Na lt K lt Rb lt Cs`.

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Which of the following is the most powerful reducing agent in the gas phase ?A. CsB. LiC. KD. Na

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