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Question:

Fill in the blanks:(a) Phosphorus is very _____ non-metal.(b) Metals are ____ conductors of heat and ____ .(c) Iron is ______ reactive than copper.(d) Metals react with acids to produce _____ gas.

Solution:

(a) Phosphorus is very reactive non-metal.
(b) Metals are good conductors of heat and electricity.
(c) Iron is more reactive than copper.
(d) Metals react with acids to produce hydrogen gas.