Multiple Choice QuestionsThe electronic configuration of an element is 1s2,2s2 2p6, 3s2 3p6, 3d10, 4s2 4p3. To which of the following elements it is similar in properties?
Boron
Oxygen
Nitrogen
Chlorine
Which of the following will replace Br2 from the aqueous solution having bromide ion?
Cl2
I
I2
Cl
Which of the following is pseudo halogen?
IF7
(CN)2
ICl
I
B.
(CN)2
Ions which consists of two or more electronegative atoms of which at least one is nitrogen and have properties similar to those of halide ions are called pseudohalide ions. Just as halide ions have corresponding diatomic molecules, pseudohalide ions have also corresponding dimeric molecules. These are called pseudo halogens and show properties similar to those of halogens.
e.g. (CN)2, (SCN)2, (OCN)2
Correct order of electron affinities of halogens is
F> Cl> Br> I
I> Br> Cl> F
Cl> F>I>Br
Cl>F>Br>I
If NO2(N2O4) is dissolved in NaOH, we get solution of
NaNO2
NaNO3
mixture of NaNO2 and NaNO3
NaNO4
Which one of the following gases has both oxidising as well as reducing property?
CO
SO2
H2S
PH3
Among the following, the group of molecules that undergoes rapid hydrolysis is
SF6, Al2Cl6, SiMe4
BCl3, SF6, SiCl4
BCl3, SiCl4, PCl5
SF6, Al2Cl6, SiCl4
Switch
