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Chemistry
The metal mainly used in devising photoelectric cells is:
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Q. The metal mainly used in devising photoelectric cells is:
JEE Main
JEE Main 2020
The s-Block Elements
A
$Na$
11%
B
$Rb$
26%
C
$Li$
21%
D
$Cs$
42%
Solution:
Cs used in photoelectric cell as it has least ionisation energy.