Answer:
NaOH is the Answer.
Explanation:
By criss crossing the charge numbers, we find the chemical formula of a compound
For example Aluminium chloride
Al has 3+ charge and Cl has 1- charge
3 becomes the subscript of Cl and 1 becomes the subscript of Al
So the chemical formula will be [tex]Al_1 Cl_3[/tex]
Sodium Hydroxide is NaOH as Na the charge is [tex]1^+[/tex] and as OH, the charge is [tex]1^-[/tex]
Sodium phosphate is [tex]Na_3 PO_4[/tex] as sodium has [tex]1^+[/tex] charge and phosphate has [tex]PO_4^3-[/tex] charge.
Sodium sulfate is [tex]Na_2 SO_4[/tex] as sodium has [tex]1^+[/tex] charge and sulfate has [tex]SO_4^2-[/tex] charge.
Sodium chloride will be NaCl as sodium has [tex]1^+[/tex] charge and chloride has [tex]1^-[/tex] charge.
Calcium phosphate will be [tex]Ca_3 (PO_4 )_2[/tex] because Calcium possess [tex]2^+[/tex] charge and phosphate has [tex]PO_4^3-[/tex] charge.
