MCQ
Which of the following has covalent bond
- A$N{a_2}S$
- ✓$AlC{l_3}$
- C$NaH$
- D$MgC{l_2}$
✓
Answer
Correct option: B.
$AlC{l_3}$
(b) We know that $A{l^{ + 3}}$ cation is smaller than $N{a^ + }$ (because of greater nuclear change) According to Fajan's rule, small cation polarise anion upto greater extent. Hence $A{l^{3 + }}$ polarise $C{l^ - }$ ion upto greater extent, therefore $AlC{l_3}$ has covalent bond between $Al$ and $Cl$ atoms.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Acetylene is prepared industrially by passing electric discharge through graphite electrodes in the atmosphere of
Which one of the following species does not represent cationic species of vanadium formed in aqueous solution
Which of the following is formed by the action of water on sodium peroxide
When sugar ' $X$ ' is boiled with dilute $H _{2} SO _{4}$ in alcoholic solution, two isomers ' $A$ ' and ' $B$ ' are formed. $'A'$ on oxidation with $HNO _{3}$ yields saccharic acid where as ' $B$ ' is laevorotatory. The compound ' $X$ ' is ....... .
→Match List $I$ with $II$ and pick the correct matching from the codes given below
→| List $I$ (Haloalkane/arene) | Lits $II$ (Application) | ||
| $A.$ | Iodoform | $1.$ | $CF_4$ |
| $B.$ | $BHC$ | $2.$ | Antiseptic |
| $C.$ | Freon $-14$ | $3.$ | Moth repellent |
| $D.$ | Halothanes | $4.$ | Inhalative anaesthetic |
| $E.$ | $p-$ Dichlorobenzene | $5.$ | Termite pesticide |
Identify the reaction order from the following rate constants.
$k=3 \times 10^{-4} s^{-1}$
→$k=3 \times 10^{-4} s^{-1}$
The number of hydrogen atoms in $0.9\,g$ glucose $(C_6H_{12}O_6)$ $(M_w = 180\,g/mol)$ is same as
→The increasing order of the reactivity of the following compounds towards electrophilic aromatic substitution reaction is
Which of the following is not a disaccharide?
The number of $P - O - P$ bridges in the structure of phosphorous pentoxide and phosphorous trioxide are respectively
→