Question

How are chemical formulas of binary ionic compounds generally written? a cation on left, anion on right b anion on left, cation on right c roman numeral first, then anion, then cation d subscripts first, then ions?

Answer 1

Answer:  a cation on left, anion on right

Explanation: Binary ionic compounds are compounds formed by a metal and a non metal where a metal loses electron to form positively charged cation and the non metal gains electrons to form negatively charged anion.

The chemical formula of ionic compound is written by writing the cation first and then the anion.

For Example: Binary ionic compound sodium chloride is written as :

$NaCl$ where sodium is present as cation $(Na^+)$ and chlorine is present as anion $(Cl^-)$

Answer 2

a) cation on left, anion on right b anion on left, for example NaCl.