a) 1 s b) 2 s c) 3 p d) 2 p Answer: a Explanation: It is in the ...

If wavelength of photon is \[2.2×10^{-11}m, h=6.6 ×10^{-34}Js\]       , then momentum of photon is a) \[3 × 10^{-23}Kg/s\]

The energy of a photon is given as \[\triangle E\diagup atom = 3.03*10^{-19} J atom^{-1}\]     . Then the wavelength ...

a) 3 : 1 b) 2 : 1 c) 1 : 2 d) 1 : 3 Answer: b Explanation: ...

a) their sizes are same b) chloride ion is bigger than potassium ion c) potassium ion is relatively bigger

a) \[Na^{+}\] b) \[Mg^{2+}\] c) \[O^{2-}\] d) \[Cl^{-}\] Answer: d Explanation: Na+ , Mg++, O2- contain 10 electrons each Cl- ...

a) \[NO^{+},C_2^{2-},O_2^-,CO\] b) \[N_{2},C_2^{2-},CO,NO\] c) \[CO,NO^{+},CN^{-},C_2^{2-}\] d) \[NO,CN^{-},N_{2},O_2^-\] Answer: c Explanation: The species \[CO,NO^{+},CN^{-},C_2^{2-}\]   Contain 14 electrons each.

a) \[N^{3-}\] b) \[O^{2-}\] c) \[F^{-}\] d) Ne Answer: c Explanation: \[F^{-}\]

a) \[H^{+}\] b) \[He^{+}\] c) He d) Be Answer: c Explanation: Hydride ion H- contains two electrons ...

a) 2 b) 17 c) 37 d) 38 Answer: d Explanation: For neutral atom . No. ...