Neon and Heteronuclear Diatomic Molecules

Q. calculate number of electrons present in 9.5g of PO4

Q.

The common features among the species $C{N}^{-},COandN{O}^{+}$ are

1. Bond order three and isoelectronic

2. Bond order three and weak field ligands

3. Bond order two and -acceptors

4. Isoelectronic and weak field ligands

Q.

Electrophiles are electron seeking species. Which of the following groups contains only electrophiles?

1. $B{F}_3,N{H}_3,H_{2}O$

2. $AlC{l}_3,S{O}_3,N{O}_2^{+}$

3. $N{O}_2^{+},C{H}_3^{+},C{H}_3-C^{+}=O$

4. $\cdot$
   $C_2{H}_5^{-},C_2{H}_5,C_2{H}_5^{+}$

Q.

Which of the following is not isoelectronic?

1. ${C{H}_3}^{+}$

2. $H_3{O}^{+}$

3. $N{H}_3$

4. ${C{H}_3}^{-}$

Q.

Which of the following is not isoelectronic?

1. 

2. 

3. 

4. 

Q. The total value of m for the electrons (n=4) is:- (1)4 (2)8 (3)16 (4)32

Q.

Which of the following are iso-electronic and iso-structural?

$N{O}_3^{-}$, $C{O}_3^{2-}$, $Cl{O}_3^{-}$, $S{O}_3$

1. NO${}_3$${}^{-}$, CO${}_3$${}^{2-}$

2. NO${}_3$${}^{-}$, SO${}_3$

3. CO${}_3$${}^{2-}$, ClO${}_3$${}^{-}$

4. CO${}_3$${}^{2-}$, SO${}_3$

Q. ntFor a diatomic molecule the dipole moment is 1.2D and bond length is 1 angstrom. calculate the charge fraction on each atom.n nta) 12%n ntb) 25%n

Q.

Which of the following are iso-electronic and iso-structural?

$N{O}_3^{-}$, $C{O}_3^{2-}$, $Cl{O}_3^{-}$, $S{O}_3$

1. ,

2. ,

3. ,

4. ,

Q. 12. Draw the Lewis dot structure of NO_3^- and calculate number of bond pairs and lone pairs in central atom

Q.

Which of the following are iso-electronic and iso-structural?

$N{O}_3^{-}$, $C{O}_3^{2-}$, $Cl{O}_3^{-}$, $S{O}_3$

1. NO${}_3$${}^{-}$, CO${}_3$${}^{2-}$

2. NO${}_3$${}^{-}$, SO${}_3$

3. CO${}_3$${}^{2-}$, ClO${}_3$${}^{-}$

4. CO${}_3$${}^{2-}$, SO${}_3$

Q.

Which of the following have same bond order?

1. $C{N}^{-}$

2. ${O_2}^{-}$

3. $N{O}^{+}$

4. $C{N}^{+}$

Q.

The common features among the species $C{N}^{-},COandN{O}^{+}$ are

1. Bond order three and isoelectronic

2. Bond order three and weak field ligands

3. Bond order two and $\pi$ -acceptors

4. Isoelectronic and weak field ligands

Q.

Which of the following have same bond order?

1. $C{N}^{-}$

2. ${O_2}^{-}$

3. $N{O}^{+}$

4. $C{N}^{+}$

Q. ↵why does sulphur hv 5 free electrons instead of 6:


Q5. What is the formal charge on the sulphur atoms in a SO₄^2- ion ?​

A. 0
B. -1
C. +2
D. +3

Q. In which of the following ionisation processes has the bond order increased and the magnetic behaviour changed?

1. $C_2\to C_2^{+}$
2. $NO\to N{O}^{+}$
3. $O_2\to O_2^{+}$
4. $N_2\to N_2^{+}$

Q.

Which of the following is iso-electronic?

1. ${CN}^{-},CO$

2. $N{O}_2,C{O}_2$

3. ${N{O}_2}^{-},C{O}_2$

4. $S{O}_2,C{O}_2$