a) 1 s b) 2 s c) 3 p d) 2 p Answer: a Explanation: It is in the ...
View QuestionIf wavelength of photon is 2.2×10^−11m, h=6.6×10^−34Js ,then momentum of photon is
If wavelength of photon is \[2.2×10^{-11}m, h=6.6 ×10^{-34}Js\] , then momentum of photon is a) \[3 × 10^{-23}Kg/s\]
View QuestionThe energy of a photon is given as △E╱atom=3.03∗10^−19 J atom^−1. Then the wavelength (λ) of the photon is.
The energy of a photon is given as \[\triangle E\diagup atom = 3.03*10^{-19} J atom^{-1}\] . Then the wavelength ...
View QuestionRatio of energy of photon of wavelength 3000 Å and 6000Å is
a) 3 : 1 b) 2 : 1 c) 1 : 2 d) 1 : 3 Answer: b Explanation: ...
View QuestionChloride ion and potassium ion are isoelectronic. Then
a) their sizes are same b) chloride ion is bigger than potassium ion c) potassium ion is relatively bigger
View QuestionWhich of the following is not iso electronic
a) \[Na^{+}\] b) \[Mg^{2+}\] c) \[O^{2-}\] d) \[Cl^{-}\] Answer: d Explanation: Na+ , Mg++, O2- contain 10 electrons each Cl- ...
View QuestionAmong the following groupings which represents the collection of isoelectronic species?
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.
View QuestionWhich of the following isoelectronic species has the smallest atomic radius?
a) \[N^{3-}\] b) \[O^{2-}\] c) \[F^{-}\] d) Ne Answer: c Explanation: \[F^{-}\]
View QuestionThe hydride ion is isoelectronic with
a) \[H^{+}\] b) \[He^{+}\] c) He d) Be Answer: c Explanation: Hydride ion H- contains two electrons ...
View QuestionThe number of electrons and neutrons of an element is 18 and 20 respectively. Its mass number is
a) 2 b) 17 c) 37 d) 38 Answer: d Explanation: For neutral atom . No. ...
View Question