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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
Name the technique that you use if only the solid component of a solution is required.
Answer the following question:
What do you understand by the statement: ‘metals are ductile and malleable’?
Fill in the blank
_________ refers to the number of atoms in the molecule of an element
Indicate whether the following statement is true or false:
Metals reflect light and are good conductors of electricity
Indicate whether the following statement is true or false:
Elements are made up of compounds
State what are radicals. Give the names of the radicals –
(a) NO3
(b) OH
(c) SO4
(d) CO3
Complete the statement given below by filling in the blank with the correct word.
Element ______ has the symbol derived from its Latin name ‘Argentum’
Write the names of elements from the following symbol:
Xe
State five different characteristics of compounds.
Select the correct answer from A, B, C, D & E for the statement given below :
A non-metal that is lustrous.
