TG EAMCET 4 May 2025 Shift 2 Paper

Since, Z is an alkali metal with atomic number a+2
Y has atomic number a+1, so it must be a noble gas. X has atomic number a, so it must be a halogen.
X is a halogen which is non-metal. Z is an alkali metal, which is a metal. Compound formed between metal and non-metal is ionic.