Why is sodium hydroxide written as NaOH?

Answer 1

The positive ions are written first .

The negative ions are written at the end.

NaOH

is Na^(+) positive ion so is written first.

'OH^(-)' is the negative ion so is written last.

Similarly with other hydroxides.

Similarly with acids.

H2SO4

2H^(+) is written first

SO4^(2-) is written last.

Answer 2

Sodium hydroxide is made of Na+ ions and OH- ions. So it is written as NaOH. NaOH is a base compound.