Name a metal/non metal:(a) which makes iron hard and strong. (b) which is alloyed with any other metal to make a amalgam. (c) which is used to galvanise iron articles. (d) whose articles when exposed to air form a black coating.
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A metal/non-metal which makes iron hard and strong.
⇒ Carbon
(Carbon is a non-metal. It's belong to 2nd period and 14th group.)
Electronic configuration: [He] 2s^2 2p^2
A metal/non-metal which is alloyed with any other metal to make a amalgam.
⇒ Mercury
(Mercury is a mtal. It belongs to 6th period and 12th group.)
Electronic configuration: [Xe] 4f^14 5d^10 6s^2
A metal/non-metal which is used to galvanise iron articles.
⇒ Zinc
(Zinc is a metal. It belongs to 4th period and 12th group.)
Electronic configuration: [Ar] 3d^10 4s^2
A metal/non-metal whose articles when exposed to air form a black coating.
⇒ Silver
(Silver is a metal. It belongs to 5th period and 11th group.)
Electronic configuration: [Kr] 4d^10 5s^1
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