Question

Please answer them:
1) Why different metal have different hardness??
2) why mercury is liquid??
3) why mercury is a metal ??
4) 100 milligram of silver can change into ------- metre of wire ??
5) why metal conduct electricity??

Answer 1

1.Metals are made with Strong bond,Hence they They are hard
2.Mercury is liquid,Because of the behavior of the valence electrons, mercury has a low melting point, is a poor electrical and thermal conductor and doesn't form diatomic mercury molecules in the gas phase
3.Mercury is also sometimes called quicksilver or liquid silver. ... Its chemical symbol (Hg) comes from hydrargyrum from the Greek word hydrargyros meaning 'water' and 'silver'. Mercury is classified as a "Transition Metal" as it is ductile, malleable, and is able to conduct heat and electricity.
4.Yes,Metals have the property at which they can be drawn in to thin wires..
5.Metal atoms have outer electrons which are not tied to any one atom. These electrons can move freely within the structure of a metal when an electric current is applied. There are no such free electrons in covalent or ionic solids, so electrons can't flow through them - they are non-conductors

Answer 2

Answer:

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