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Metal which emits photo electrons very easily is

$\begin{array}{1 1}(a)\;Al&(b)\;K\\(c)\;Cs&(d)\;Cu\end{array}$

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Cs has low IE.
Metal which emits photo electrons very easily is Cs.
Hence (c) is the correct answer.
answered Jan 27, 2014 by sreemathi.v
 
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