Answer:
i think C
Explanation:
true
this is because melting point and boiling point decreases down the group because they are held together by attractions between positive nuclei and delocalised electrons
D. 1×10⁻⁸ M
[H⁺] [OH⁻] = 10⁻¹⁴
(1×10⁻⁶) [OH⁻] = 10⁻¹⁴
[OH⁻] = 1×10⁻⁸
