Advertisements
Advertisements
प्रश्न
Name two metalloids.
एक पंक्ति में उत्तर
उत्तर
Boron (B), Silicon (Si)
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Some properties are listed in the following Table. Distinguish between metals and non-metals on the basis of these properties
Properties | Metals | Non-metals |
1. Appearance | Lustrous | Dull |
2. Hardness | Hard | Soft |
3. Malleability | Can be beaten into thin sheets | Cannot be beaten into thin sheets |
4. Ductility | Can be drawn into wires | Cannot be drawn into wires |
5. Heat Conduction | Good conductors of heat | Poor conductors of heat |
6. Conduction of Electricity | Good conductors of electricity | Poor conductors of electricity |
For the electro-refining of copper: What is the cathode made up of?
Name the metals present in the following alloys
Duralumin
Which metals do not corrode easily?
Why do gold ornaments look new even after several years of use?
Which metal occurs as a halide also gives the name of their respective ore.
If the electronic configuration of metal A is (2, 8, 1) and that of metal B is (2, 8, 2) then:
a. Which metal is less reactive?
b. Write the names of the two metals.
c. Write the balanced chemical equation of the reaction of anyone metal with hydrochloric acid.
Give reason for the following:
Rusting reduces the structural strength of iron.
The sound of one metal colliding with another makes a noise, this property is called as _______.
Oxygen, hydrogen, and sulphur are examples for