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CBSE - Class 11 Chemistry Chemical Bonding and Molecular Structure Worksheet

Which out of $NH_3$ and $NF_3$ has higher dipole moment and why ?

Write Lewis dot symbols for atoms of the following elements : Mg, Na, B, O, N, Br.

Write Lewis symbols for the following atoms and ions: S and $S^{2-}$; Al and $Al^{3+}$; H and $H^{-}$

Which hybrid orbitals are used by carbon atoms in the following molecules? (e) $CH_3COOH$

Structure of Ni(CO)₄

Square planar

Butterfly

Tetrahedral

Molecule does not exist

HYBRIDIZATION OF H2SO4 IS

SP2

SP3

SP3D

SP3D2

Draw the Lewis structures for the following molecules and ions : $H_2S$, $SiCl_4$, $BeF_2$, $CO_3^{2-}$, $HCOOH$

Considering x-axis as the internuclear axis which out of the following will not form a sigma bond and why? (a) $1s$ and $1s$ (b) $1s$ and $2p_x$; (c) $2p_y$ and $2p_y$ (d) $1s$ and $2s$.

Write the resonance structures for $SO_3$, $NO_2$ and $NO_3^{-}$.

10.

Write the significance of a plus and a minus sign shown in representing the orbitals.

11.

Use Lewis symbols to show electron transfer between the following atoms to form cations and anions : (a) K and S

12.

What is the total number of sigma and pi bonds in the following molecules? (b) $C_2H_4$

13.

Use Lewis symbols to show electron transfer between the following atoms to form cations and anions : (b) Ca and O

14.

What is the total number of sigma and pi bonds in the following molecules? (a) $C_2H_2$

15.

Compare the relative stability of the following species and indicate their magnetic properties; $O_2$, $O_2^+$, $O_2^-$ (superoxide), $O_2^{2-}$ (peroxide)

16.

Use Lewis symbols to show electron transfer between the following atoms to form cations and anions : (c) Al and N.

17.

Draw diagrams showing the formation of a double bond and a triple bond between carbon atoms in $C_2H_4$ and $C_2H_2$ molecules.

18.

Explain the formation of $H_2$ molecule on the basis of valence bond theory.

19.

Distinguish between a sigma and a pi bond.

20.

How do you express the bond strength in terms of bond order ?

Worksheet Answers

Option C

Option B

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