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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Maximum covalency of nitrogen is ______. - Chemistry

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प्रश्न

Maximum covalency of nitrogen is ______.

विकल्प

  • three

  • five

  • four

  • six

MCQ
रिक्त स्थान भरें
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उत्तर

Maximum covalency of nitrogen is four.

Explanation:

Maximum covalency of nitrogen is four as it cannot extend its valency beyond four \[\ce{[NH4, R4N]}\] due to absence of vacant d orbitals.

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अध्याय 7: The p-block Elements - Multiple Choice Questions (Type - I) [पृष्ठ ९२]

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एनसीईआरटी एक्झांप्लर Chemistry [English] Class 12
अध्याय 7 The p-block Elements
Multiple Choice Questions (Type - I) | Q 13 | पृष्ठ ९२

संबंधित प्रश्न

Give reasons for the following : (CH3)3 P = O exists but (CH3)3 N = O does not.


The group 15 element having inner electronic configuration as of argon is-

(a) Phosphorous (z = 15)

(b) Antimony (z =51)

(c) Arsenic (z = 33)

(d) Nitrogen (z = 7)

 


The oxidation state of nitrogen in dinitrogen trioxide is ____

(a) + 1

(b) + 2

(c) + 3

(d) + 4


Elements having +5 oxidation state is ____________.


In which of the following compound, nitrogen shows the oxidation state of +5?


Collectively the elements of group 15 are called:


The p-block element of group 15 that forms predominantly basic oxide is _____________.


H2S is more acidic than H2O because ____________.


The correct order of oxidising power is:


Covalency of nitrogen is restricted to ______.


The oxidation state of central atom in the anion of compound \[\ce{NaH2PO2}\] will be ______.


Which of the following orders are correct as per the properties mentioned against each?

(i) \[\ce{As2O3 < SiO2 < P2O3 < SO2}\] Acid strength.
(ii) \[\ce{AsH3 < PH3 < NH3}\] Enthalpy of vapourisation.
(iii) \[\ce{S < O < Cl < F}\] More negative electron gain enthalpy.
(iv) \[\ce{H2O > H2S > H2Se > H2Te}\] Thermal stability.

Match the items of Columns I and II and mark the correct option.

  Column I Column II
(A) Its partial hydrolysis does not  (1) He
(B) It is used in modern diving apparatus (2) XeF6
(C) It is used to provide inert atmosphere
for filling electrical bulbs
(3) XeF4
(D) Its central atom is in sp3d2 hybridisation (4) Ar

In \[\ce{PCl5}\], phosphorus is in sp3d hybridised state but all its five bonds are not equivalent. Justify your answer with reason.


The elements which are characterized by the outer electronic configuration ns1 to ns2 np6 are collectively called


In a regular octahedral molecule mx6, the number of X – M – X bouds at 180° are:-


The basic strengths of the hydrides group is elements decrease in the order.


P4O10 is an anhydride of


Chemical nature of the nitrogen oxide compound obtained from a reaction of concentrated nitric acid and P4O10 (in 4 : 1 ratio) is ______.


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