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ICSE Class 10 Answered

why melting and boiling points of metal decreases down the group?? why melting and boiling point of metal first increses across a period , till 14A  and then decreses??
Asked by zaheenazra | 06 Apr, 2020, 07:47: AM
answered-by-expert Expert Answer
Different groups show different trends in boiling and melting points. The boiling and melting points decrease as you move down the group in group 1 and group 2. The boiling and melting points mostly increase as you move down the group for transition metals, but they increase for the zinc family. In Groups 13 and 14, there is a decrease in boiling and melting points as you move down the group. In Groups 15, 16, and 17, the melting and boiling points tend to increase in both. Group 18 decrease in their boiling and melting points down the group.                   
Answered by Ramandeep | 06 Apr, 2020, 11:00: AM

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