Multiple Choice Question Answer IX — task. Science CBSE, Class 9.

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1. Electron configuration of a p in ground state is -

\(1s^2\), \(2s^2\), \(2p^6\), \(3s^2\), \(3p^2\), \(3d^1\)
\(1s^2\), \(2s^2\), \(2p^6\)
\(1s^2\), \(2s^2\), \(2p^6\), \(3s^2\), \(3p^3\)
\(1s^2\), \(2s^2\), \(2p^6\), \(3s^2\)

2. When a gas at reduced pressure is subjected to an electric discharge. the rays originating from the negative electrode ray -

Radiation ray
Cathode rays
Anode ray
X - rays

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