Electronegativity Conductivity and Photoelectric Effect (Group 1)

Q.

The oxidation state of $Fe$ in $FeS{O}_4$.$(N{H}_4{)}_{2}S{O}_4$.$6H_{2}O$ is

1. +2

2. +1

3. -2

4. -1

Q. The correct sequence of increasing covalent character is represented by

1. 
2. 
3. 
4. 

Q. Which alkali metal can be preferably used in photoelectric cells

1. Rb
2. Cs
3. Na
4. Li

Q. Electropositivity decreases as we go down the group.

1. True

2. False

Q. Which of the following acts as a better metal?

1. Li

2. Na

3. K

4. Rb

Q. Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts are put under an electric field?

1. $Na$
2. $K$
3. $Li$
4. $Rb$

Q. The ionic mobility of alkali metal ions in aqueous solution is maximum for

1. $L{i}^{+}$
2. $N{a}^{+}$
3. $K^{+}$
4. $R{b}^{+}$

Q. Electropositivity decreases as we go down the group.

1. True

2. False

Q. The correct sequence of increasing covalent character is represented by

1. 
2. 
3. 
4. 

Q. Which of the following acts as a better metal?

1. Na

2. K

3. Li

4. Rb