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Question
Elements are classified into – Metals – Non-metals – Metalloids – Noble gases. State which of A, B, C, D is a –
1. Metallic element
2. Non-metallic element
3. Metalloid
4. Noble gas.
A: Is non-malleable, non-ductile & a poor conductor of electricity ___________
B: Has lustre, is malleable and ductile & a good conductor of heat ___________
C: Is unreactive and inert and present in traces in the air _________
D: Shows properties of both metals and non-metals ___________
Solution
A : Is non-malleable, non-ductile & a poor conductor of electricity Non-metallic element
B : Has lustre, is malleable and ductile & a good conductor of heat Metallic element
C : Is unreactive and inert and present in traces in air Noble gas.
D : Shows properties of both metals and non-metals Metalloid
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