Q.
Which of the following order is incorrect?
(a)
$ NH_{3}<\, PH_{3 }<\, AsH_{3}$
Acidic character
(b)
$ Li <\, Be <\, B <\, C$
First ionisation energy
(c)
$Al_{2}O_{3} < \,MgO <\,Na_{2}O <\, K_{2}O$
Basic character
(d)
$ Li^{+} < \,Na^{+}<\,K^{+} <\, Cs^{+}$
Ionic character
| (a) | $ NH_{3}<\, PH_{3 }<\, AsH_{3}$ | Acidic character |
| (b) | $ Li <\, Be <\, B <\, C$ | First ionisation energy |
| (c) | $Al_{2}O_{3} < \,MgO <\,Na_{2}O <\, K_{2}O$ | Basic character |
| (d) | $ Li^{+} < \,Na^{+}<\,K^{+} <\, Cs^{+}$ | Ionic character |
Classification of Elements and Periodicity in Properties
Solution: