Question

The oxidation state and covalency of $Al$ in ${\left[{AlCl\left(H_{2}O\right)}_5\right]}^{2+}$ are respectively:

• A. $+6,6$
• B. $+3,6$
• C. $+3,3$
• D. $+2,6$

Answer 1

Answer: (B)

In aqueous solution. The water molecules are just interacting electrostatically, and not actually bonding. Their partially negative end is pulled by aluminum's + 3 oxidation state in an ion-dipole interaction. Cl − is similarly pulled by Al 's + 3 oxidation state

Oxidation state of Al in given compound x+(-1)+5(0) = +2 x = +3 while covalency is 6.

The oxidation state and covalency of ${\left[{AlCl\left(H_{2}O\right)}_5\right]}^{2+}$ are +3, 6 respectively.