MEDIUM
JEE Main
IMPORTANT
Earn 100

Number of paramagnetic oxides among the following given oxides is ___________.

Li2O, CaO, Na2O2, KO2, MgO and K2O

48.72% studentsanswered this correctly

Important Questions on Chemical Bonding and Molecular Structure

MEDIUM
JEE Main
IMPORTANT

The spin-only magnetic moment value of B2+ species is ×10-2BM (Nearest integer)

[ Given : 3=1.73]

HARD
JEE Main
IMPORTANT

Match List - I with List - II :

  List-II   List-II
(A) PtCl42- (I) sp3d
(B) BrF5 (II) d2sp3
(C) PCl5 (III) dsp2
(D) CoNH363+ (IV) sp3d2

Choose the most appropriate answer from the options given below

HARD
JEE Main
IMPORTANT

Which of the following statements are correct ?

(A) Both LiCl and MgCl2 are soluble in ethanol.

(B) The oxides Li2O and MgO combine with excess of oxygen to give superoxide.

(C) LiF is less soluble in water than other alkali metal fluorides.

(D) Li2O is more soluble in water than other alkali metal oxides.

Choose the most appropriate answer from the options given below

MEDIUM
JEE Main
IMPORTANT
The correct order of bond orders of C22-, N22- and O22- is
MEDIUM
JEE Main
IMPORTANT

Given below are two statements.

Statement I: The presence of weaker π-bonds make alkenes less stable than alkanes

Statement II: The strength of the double bond is greater than that of carbon-carbon single bond.

In the light of the above statements, choose the correct answer from the options : given below.

HARD
JEE Main
IMPORTANT

Bonding in which of the following diatomic molecule(s) become(s) stronger, on the basis of MO Theory, by removal of an electron?

(A) NO

(B) N2

(C) O2

(D) C2

(E) B2

Choose the most appropriate answer from the options given below :

MEDIUM
JEE Main
IMPORTANT
Number of electron deficient molecules among the following PH3,B2H6,CCl4,NH3,LiH and BCl3 is