MCQ
For which element $[IP_2 -IP_1 < 11\, eV]$ is found
- A$Al$
- ✓$Mg$
- C$Ar$
- DNone of these
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$O _2, HF , H _2 O , NH _3, H _2 O _2, CCl _4, CHCl _3, C _6 H _6, C _6 H _5 Cl \text {. }$
When a charged comb is brought near their flowing stream, how many of them show deflection as per the following figure?