Classification of elements and Periodicity in properties MCQs for NEET — Chemistry Questions with Answers

Hydrogen peroxide

Diborane (at absolute zero temp.)

First member of alkyne series

Diborance (at 10$°$C temp)

Cu⁺ > Cu⁺²

Mn⁺² > Mn⁺³

N^-3 > N

All of the above

${\mathrm{Si}}^{+}+\mathrm{Cl}\to \mathrm{Si}+{\mathrm{Cl}}^{+}$

 $\mathrm{F}+{\mathrm{I}}^{-}\to {\mathrm{F}}^{-}+\mathrm{I}$

both

none

Ca⁺², K⁺, Cl^-, S^-2

Cl^-, Ca⁺², K⁺, S^-2

S^-2, Cl^-, Ca⁺², k⁺

None of the above

C

O

B

F

$∆$EN=1.6-2.2

$∆$DEN=1.7-2.2

$∆$EN=0.8-1.1

$∆$EN=0-1.6

Electronegativity, radius and Z*

resonance energy of molecule, Ionisation potential and electron affinity

Bond polarity, diagonal relationship and periodicity

None of the above

[Rn] 5f³ 6d¹ 7s²

[Rn] 5f⁵ 6d¹ 7s²

[Rn] 5f² 6d¹ 7s²

None of the above

1.95 and 1.22

0.85 and 0.35

1 and 0.35

6.85 and 2.2

Endothermic

Endothermic for Mg, Be, N

Exothermic for Mg, Be, N and noble gases

Depends of electronic configuration