MCQ
Which of the following does not contain any co- ordinate bond?
- A$H_3O^+$
- B$BF^-_4$
- ✓$HF^-_2$
- D$NH^+_4$
✓
Answer
Correct option: C.
$HF^-_2$
c
In option $A$, coordinate$/$dative bond is formed between lone pair of Oxygen atom and empty s orbital of $H$ ion.
In option $A$, coordinate$/$dative bond is formed between lone pair of Oxygen atom and empty s orbital of $H$ ion.
In option $B$, Boron atom has empty $2 p$ orbital after formation of $BF _3$, so it can accept lone pair of fluorine atom ($F$ atom has $3$ lone pairs) and form $BF^{-} _4$.
In option $C$, there is no coordinate bonding but very strong Hydrogen bonding due to high electronegativity of Fluorine. $(C)$ is the correct answer.
In option $D$, Nitrogen has one lone pair left after forming $3$ covalent bonds with hydrogen, it forms coordinate bond by sharing that lone pair with $H$ ion.
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
The $IUPAC$ name of (Figure) is
→Using the given figure, the ratio of $R_t$ values of sample $A$ and sample $\mathrm{C}$ is $\mathrm{x} \times 10^{-2}$. Value of $\mathrm{x}$ is . . . . . . . .
→(Image)
Samples $(A, B, C)$
Fig : Paper chromatography of Samples
$pH$ of a solution is $9.5. $ The solution is
→The mass of $CO_2$ that will be obtained by heating $10\, kg$ of $80\%$ pure lime stone $(CaCO_3)$ is ............... $\mathrm{kg}$
→Which of the following have maximum number of atoms?
Which is the correct order of second ionization potential of $C, N, O$ and $F$ in the following ?
→Production of iron in blast furnace follows the following equation
→$Fe _{3} O _{4}( s )+4 CO ( g ) \rightarrow 3 Fe ( l )+4 CO _{2}( g )$
when $4.640 \,kg$ of $Fe _{3} O _{4}$ and $2.520 \,kg$ of $CO$ are allowed to react then the amount of iron (in $g$ ) produced is $....$
[Given : Molar Atomic mass $\left( g\, mol ^{-1}\right): Fe =56$
Molar Atomic mass $\left( g \,mol ^{-1}\right): 0=16$
Molar Atomic mass $\left( g\, mol ^{-1}\right):= C =12$
Which of the following properties of atom could be explained correctly by Thomson model of atom?
Which of the following orbitals has/have zero probability of finding the electron in $xy$ plane :
→Following reaction describes the rusting of iron
→$4Fe + 3{O_2}\, \to \,4F{e^{3 + }} + 6{O^{2 - }}$
Which one of the following statement is incorrect