List of top Chemistry Questions on Chemical bonding and molecular structure asked in TS EAMCET

Consider the following \[ \mathrm{HF,\ H_2O,\ BeCl_2,\ CO_2,\ BF_3,\ NF_3,\ CCl_4,\ CHCl_3} \] The number of polar molecules is

How many of the following molecules ions are paramagnetic in nature? \[ \mathrm{N_2,\ O_2,\ F_2,\ NO,\ CO,\ O_2^-,\ O_2^{2-},\ N_2^+,\ NO^+,\ NO^-,\ H_2} \]

Identify the correct orders for the given properties. I. C-H<C-O<N-O<C-C (Bond length) {II. } H_2S<O_3<NO_2<CO_2 (Bond angle) {III. } He_2^+<B_2<C_2<N_2 (Bond order)

Consider the following species: \[ Li_2,\; B_2,\; Be_2,\; C_2,\; O_2,\; O_2^{2-},\; F_2 \] The number of species with bond order value 1 is:

Identify correct orders of covalent character:

Match molecules with correct geometries:
BrF$_5$, XeF$_4$, ClF$_3$, SF$_4$

Which one of the following molecules has maximum number of lone pairs of electrons?

Identify the reaction in which the hybridization of the underlined atom is changed

The sets of molecules in which central atom has no lone pair of electrons are:
i. $\text{SnCl}_2, \text{NH}_3, \text{SF}_4$
ii. $\text{HgCl}_2, \text{SO}_3, \text{SF}_6$
iii. $\text{BeCl}_2, \text{BF}_3, \text{PCl}_5$
iv. $\text{ClF}_3, \text{BrF}_5, \text{XeF}_6$

The atomic numbers of the elements X, Y, Z are $a, a+1, a+2$ respectively. Z is an alkali metal. The nature of bonding in the compound formed by X and Z is

If the sum of bond orders of O$_2$ and O$_2^-$ is x, then bond order of O$_2^+$ will be

Identify the molecule / ion in which the ratio of $\sigma$ to $\pi$ bonds is 3:2

Consider the following statements
Statement I: The electronic configuration of $N_2$ in terms of molecular orbital theory is $KK (\sigma 2s)^2 (\sigma^* 2s)^2 (\pi 2p_x)^2 (\pi 2p_y)^2 (\pi 2p_z)^2$.
Statement II: According to molecular orbital theory, the double bond in $C_2$ molecule consists of two $\pi$ bonds.
The correct answer is

The correct order of bond angle of $HgCl_2 (A)$, $NH_3 (B)$, $H_2O (C)$ is

Which of the following statement is not correct?

The pair of molecules having same number of lone pair of electrons on central atom is

Identify the pairs in which both molecules do not possess same type of hybridization:
I. H$_2$O, SO$_2$
II. PCl$_3$, NH$_3$
III. SO$_2$, SO$_3$
IV. BCl$_3$, NCl$_3$

Which of the following statements are correct?
I. The increasing order of covalent character of NaCl, RbCl, MgCl$_2$ is RbCl < NaCl <\ MgCl$_2$
II. The high boiling point of water is due to intramolecular hydrogen bonding
III. H$_2$O has more dipole moment among NH$_3$, H$_2$O, and HF

The sum of bond order of \(O_2\), \(O_2^-\), \(O_2^{2-}\) and \(O_2^+\) is equal to

Observe the following statements
Statement-I: Hybridisation is not same in both SF₆ and BrF₅.
Statement-II: BrF₅ is Square pyramidal while SF₆ is octahedral in shape
The correct answer is