Number of lone pairs of electrons in the central atom of SCl₂, O₃, ClF₃ and SF₆, respectively are:

The role depressants in ‘Froth Floatation method’ is to

If the radius of the 3^rd Bohr’s orbit of hydrogen atom r₃ and the radius of 4^th Bohr’s orbit is r₄. Then

Arrange the following in the decreasing order of their covalent character:

(A) LiCl
(B) NaCl
(C) KCl
(D) CsCl

Given below are two statements : One is labeled as Assertion A and the other is labeled as Reason R.

Assertion A: Zero orbital overlap is an out of phase overlap.

Reason R: It results due to different orientation / direction of approach or orbitals.                                                                     

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

The hybridization of P exhibited in PF₅ is sp^xd^y. The value of y is