Answer:A,D
Explanation:
Option a:
Sodium has charge [tex]+1[/tex]
Hydroxide has charge [tex]-1[/tex].
So,sodium hydroxide is balanced.
Option b:
Magnesium has charge [tex]+2[/tex]
Two sulphates has a charge of [tex]-2\times 2=-4[/tex].
So,magnesium sulphate is not balanced.
Option c:
Magnesium has charge [tex]+2[/tex]
Two hydroxides have a charge of [tex]2\times -1=-2[/tex].
So,magnesium hydroxide is balanced.
Option d:
Sodium has charge [tex]+1[/tex]
Sulphate has charge [tex]-2[/tex].
So,sodium sulphate is not balanced.
