Which of the following molecule does not have a linear arrangement of atoms ?
H2S
C2H2
BeH2
CO2
Which one of the following is planar ?
XeF4
XeO4
XeO3F
XeO3F2
Linus Pauling received the Nobel Prize for the work on
atomic structure
photosynthesis
chemical bonds
thermodynamics
Among LiCl, BeCl2, BCl3 and CCl4, the covalent bond character follows the order
LiCl < BeCl2 > BCl3 > CCl4
LiCl < BeCl2 > BCl3 < CCl4
LiCl < BeCl2 < BCl3 < CCl4
LiCl > BeCl2 > BCl3 > CCl4
For two ionic solids CaO and Kl, identify the wrong statement among the following
Lattice energy of CaO is much larger than that of Kl
Kl is soluble in benzene
Kl has lower melting point
CaO has higher melting point
Which of the following two are isostructural?
NH3, BF3
PCI5, ICI5
The number of anti-bonding electron pairs is molecular ion on the basis of molecular orbital theory is (At no of O is 8)
5
2
4
6
In and Y both are electronegative elements, then
electron density on X will increase and on H will decrease
in both electron density will increase
in both electron density will decrease
on X electron density will decrease and on H increase
N2 and O2, are converted into monoanions respectively. Which of the following statements is wrong ?
In N2, the N-N bond weakens
In O-O bond length increases
In , bond order decreases
, becomes diamagentic
Which one is not para-magnetic among the following? [At. No. Be = 4, Ne = 10, As = 33, Cl = 17]
Cl-
Be
Ne2+
As-
