Metals and Non-metals
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Gold is soluble in:
  • hydrochloric acid
  • sodium hydroxide
  • nitric acid 
  • aqua regia.

D.

aqua regia.
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    What do you understand by malleability and ductility of a metal? Give examples of two metals which are both ductile and malleable.
    Answer
    The most abundant metal in earth’s crust is:
    • copper
    • aluminium
    • oxygen
    •  iron.
    Answer
    Give important physical characteristics of metals.
    Answer
    What are metals?
    Answer
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