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4. Choose the correct option.
CHECK
Which of the following is not a metal?
b) magnesium
c) phosphorus
d) silver
a) cobalt
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b)Phosphorus
Phosphorus is not a metal
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Answer:
Phosphorus is not a metal.
Explanation:
For an element to be metal it should be malleable, ductile, a good conductor of heat and electricity, lustrous, hardness, sonorous.
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