Geometry

Q. Find the total number of planar molecules among the following.
$C{O}_3^{2-},\stackrel{.}{C}{H}_3,\stackrel{.}{C}{F}_3,BeC{l}_2,B_2{H}_6,H_{3}P{O}_2,S{O}_3,B{F}_3,Xe{F}_4$

Q. In which of the following pairs, the two species are iso-structural?

1. 
2. 
3. 
4. 

Q. The structure of $Cl{F}_3$ is:

1. Trigonal planar
2. T-shaped
3. Pyramidal
4. Bent shaped

Q. Which of the following sets of molecules have different shape but same hybridisation of the central atoms?

1. $N{H}_3,H_{2}O$
2. $H_{2}S,S{O}_2$
3. $Ni(CO{)}_4,[NiC{l}_4{]}^{2-}$
4. $S{F}_4,PC{l}_5$

Q. Select the correct option for Column $I$ and Column $II$:
$$\begin{array}{cc}\text{Column}I& \text{Column}II\\ \text{(a)}N{H}_2^{-}& \left(p\right)\mu =0\\ \text{(b)}N{H}_4^{+}& \left(q\right)planar\\ \text{(c)}{I}_3^{-}& \left(r\right)d_{x^2-y^2}isinvolvedinhybridisation\\ \text{(d)}PC{l}_6^{-}& \left(s\right)d_x^{2}isinvolvedinhybridisation\\ \text{(e)}PC{l}_2^{+}& \left(t\right)Bentstructure\end{array}$$

1. $\left(a\right):q,t\left(b\right):t\left(c\right):q,s\left(d\right):p,r\left(e\right):s,t$
2. None of the above
3. $\left(a\right):r,t\left(b\right):p\left(c\right):p,s\left(d\right):p,q,s\left(e\right):q,t$
4. $\left(a\right):q,t\left(b\right):p\left(c\right):p,q,s\left(d\right):p,r,s\left(e\right):q,t$

Q. The shape of $S{F}_4$ is .

1. Square Planar
2. T-shape
3. See-saw

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> The set that contains atomic numbers of only transition elements is:

JEE MAIN - 2020

Q. What is the shape of $S{F}_4$?

1. Square Planar
2. Trigonal bipyramidal
3. T-shape
4. See-saw

Q. Compound formed by $s{p}^{3}d$-hybridization will have which of the following structure ?

1. Linear
2. Either of these depending on the number of lone pair of electrons on central atom
3. Trigonal bipyramidal
4. T-shaped

Q. In which of the following molecules $S$ atom does not assume $s{p}^3$ hybridisation?

1. $S{O}_4^{2-}$
2. $S{F}_4$
3. $S_8$
4. $S{F}_2$

Q. In which of the following molecules, the central atom does not have $s{p}^3$ hybridization?

1. $N{H}_4^{+}$
2. $S{F}_4$
3. $C{H}_4$
4. ${B{F}_4}^{-}$

Q. Which has a maximum repulsive interaction?

1. $bp-bp$
2. Equal
3. $lp-lp$
4. $lp-bp$

Q. The shape of $S{F}_4$ is .

1. Square Planar
2. T-shape
3. See-saw

Q. Determine the geometry of each of the following molecules and hybridization about the central atom in:
(i) $Be{F}_2\left(g\right)$
(ii) $Al{H}_3$
(iii) $CH\equiv CH$

1. (i) $sp$, linear (ii) $s{p}^2$, trigonal planar (iii) $s{p}^2$, planar
2. (i) $s{p}^2$, planar (ii) $sp$, linear (iii) $s{p}^2$, planar
3. (i) $sp$, trigonal planar (ii) $s{p}^2$, linear (iii) $s{p}^2$, planar
4. (i) $sp$, linear (ii) $s{p}^2$, trigonal planar (iii) $sp$, linear

Q. Assertion :$Ni(CO{)}_4$ complex has no unpaired electrons. Reason: 4s-electrons of Ni atom enter into the inner d-orbitals to facilitate the $ds{p}^2$-hybridization in Ni atom.

1. Statement-1 is true, statement-2 is true and statement-2 is correct explanation for statement-1.
2. Statement-1 is true, statement-2 is true and statement-2 is NOT the correct explanation for statement-1
3. Statement-1 is true, statement-2 is false.
4. Statement-1 is false, statement-2 is true.

Q. The $H-O-H$ bond angle in the water molecule is ${105}^o$, the $H-O$ bond distance being $0.94\mathring{A}$. The dipole moment for the molecule is $1.85D$.The charge on the oxygen atom is $X\times {10}^{-10}esu$ $cm$. Find the value of $X$. Write the answer to the nearest interger.

Q. Following are the values of the electron affinities of (in $kJmo{l}^{-1}$) the formation of $O^{-}$ and $O^{2-}$ from $O$:

1. $-142,-702$
2. $-142,702$
3. $142,702$
4. $-142,-142$

Q. Is there any similarity in the atoms of Lithium, Sodium & Potassium?

Q. Find the total number of planar molecules among the following.
$C{O}_3^{2-},\stackrel{.}{C}{H}_3,\stackrel{.}{C}{F}_3,BeC{l}_2,B_2{H}_6,H_{3}P{O}_2,S{O}_3,B{F}_3,Xe{F}_4$