Aluminium Chloride

Q. Which one of the following is the correct statement?

1. $B_2{H}_6.2N{H}_3$ is known as ${}^{\prime }inorganicbenzen{e}^{\prime }$.
2. Boric acid is a protonic acid
3. Beryllium exhibits coordination number of six
4. Chlorides of both beryllium and aluminium have bridged chloride structures in solid phase

Q.

In $A{l}_{2}C{l}_6$, which statement is incorrect-

1. Four Al - Cl bonds are of same length and two of different length

2. Six Al - Cl bonds are of same length and two of different length

3. The angle Cl - Al - Cl is ${110}^0$ and ${93}^0$

4. The angle Al - Cl - Al is ${87}^0$

Q. The electropositive character is the maximum for which of the following elements in group 13?

1. $Al$
2. $B$
3. $Ga$
4. $In$

Q. $Al{F}_3$ is soluble in HF only in presence of KF. It is due to the formation of

1. $Al{H}_3$
2. $K\left[Al{F}_{3}H\right]$
3. $K_3\left[Al{F}_3{H}_3\right]$
4. $K_3\left[Al{F}_6\right]$

Q.

In $A{l}_{2}C{l}_6$, which statement is incorrect-

1. Four Al - Cl bonds are of same length and two of different length

2. Six Al - Cl bonds are of same length and two of different length

3. The angle Cl - Al - Cl is ${110}^0$ and ${93}^0$

4. The angle Al - Cl - Al is ${87}^0$

Q. Which one of the following exist in aqueous medium?
M=Aluminium

1. $\left[M\right(H_{2}O{)}_6{]}^{3+}$
2. $\left[M\right(OH{)}_3{]}^{-}$
3. $\left[M\right(H_{2}O{)}_5{]}^{3+}$
4. $\left[M\right(H_{2}O{)}_6{]}^{2+}$