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प्रश्न
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 ___________
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उत्तर
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
संबंधित प्रश्न
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Marble
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Name A substance used as an insulator.
Differentiate between the terms –
elements, compounds & mixtures.
Write the names of elements from the following symbol:
Zn
Write the names of elements from the following symbol:
Pt
Elements are broadly classified into metals and non-metals. State six general differences in the physical properties of metals and non-metals. State two metals and two non-metals which contradict with the general physical properties – giving reasons. State one difference in property between metalloids and noble gases.
Oxygen is very essential for us to live. It forms 21% of air by volume. Is it an element or compound?
Give two example of elements.
