Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 General Science Chemistry Periodic Table

Acidity of diprotic acids in aqueous solutions increases in the order

1
H2S < H2Se < H2Te
2
H2Se < H2S < H2Te
3
H2Te < H2S < H2Se
4
H2Se < H2Te < H2S
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