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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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