讓我掐指算算

jjyyu8: Jenniferrrr helpppQDQwhen alkali metals react with water did the metal melts into the water to form solution or some of them disappeared?

jjyyu8: 其實我只是想知有無D non-soluble metal 的例子，原來系咁又學到重要野了多謝ferfer

請問reactivity是點看的？（未學

是outer shell 越不滿(?)越reactive?

jjyyu8: because their electrons are easily to lose?

啊啊謝謝我懂了！！！

jjyyu8: thank you so much for your help !!