Formal Charge

Q. Calculate the formal charge on the nitrogen atom in $N{H}_4^{+}$.

1. 1
2. -1
3. 0.25
4. -0.25

Q. The formal charge of S atom in $S{O}_3$ is :

1. $+2$
2. $+1$
3. $0$
4. $-1$

Q.

In which of the following molecule is the covalent bond most polar

1. Hl

2. HBr

3. H₂

4. HCl

Q.

Why does $S{O}_3$ act as an electrophile?

Q.

Among the following compounds, polar covalent bond is present in:

1. O₂

2. HCl

3. Cl₂

4. N₂

Q. Formal charge on carbon atom in carbonate ion??

Q. Nucleophilicity of halides in non polar, aprotic polar and polar protic solvents ?

Q. Three elements X, Y and Z have atomic numbers 11, 12 and 17 respectively. Find the sum of their electrovalency.

1. 1
2. 2
3. 3
4. 4

Q. 63.What are odd electron molecules? Explain in detail why they are known as odd electron molecule

Q. Calculate the formal charge on the nitrogen atom in $N{H}_4^{+}$.

Q.

What is the formal charge on the starred oxygen atom?

1. 1

2. 0

3. -1

4. -2

Q. 18. Also no of oxygen atom present in 3gm of carbonate ion

Q. What is the formal charge of the centre most $O$ in ozone?

1. -1
2. \N
3. 1
4. 2

Q. 36 For sodium atom number of electrons in m=O will be?

Q. The formal charge on the phosphorous atom in $P{O}_4^{3-}$ ion is:

1. $0$
2. $-3$
3. $+3$
4. $+5$

Q. If atom is stable, then why electron revovle around nucleus and how do electron get energy to revovle?

Q.

What is the formal charge on the starred oxygen in the carbonate ion? $[O-\stackrel{\underset{||}{O}}{C}-\stackrel{\ast }{O}{]}^{2-}$

1. 0

2. -1

3. -2

4. 1

Q. What is the formal charge of the centre most $O$ in ozone?

1. -1
2. \N
3. 1
4. 2

Q. the number of unpaired electron in O2 molecule is

Q. The molecule having only polar covalent bonds is
(1) C2H6 (2) H2SO4
(3) H2O2 (4) C2H2

Q. How to find the number of electron present in a compound ?