Respuesta :
The mass of Na in NaOH is 23 g, For H it is 1 and for O it is 16. The major element based on the mass is Sodium/Na, so D.
Answer: option D , Sodium
Explanation:
Molar mass of NaOH is 40
Out of 40 23 g Na and 16 g Oxygen and 1 g of Hydrogen.
So among 3 elements , Na has maximum contribution of 23 g.