Question

Metals form basic hydroxides. Which of the following metal hydroxide is the least basic ?

• A. $Mg(OH)_2$
• B. $Ca(OH)_2$
• C. $Sr(OH)_2$
• D. $Ba(OH)_2$

Answer 1

Answer: (A)

$Mg(OH)_2$

Answer 2

The basic character of metal hydroxides increases down the group from $Mg(OH)_2$ to $Ba(OH)_2$ due to increase in size, ionization enthalpy decreases and the $M?