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प्रश्न
State which element exists in the highest percentage in earth’s crust.
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उत्तर
Oxygen (O) – 46.1%
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संबंधित प्रश्न
Name the element used as a standard for atomic mass scale.
What do the following symbol stand for?
H2
State the type of element for the following:
Aluminium
Write the radical of the following valency:
Aluminium
Give the formula of the following acid:
Carbonic
State the valency of the following metallic element and write symbol with the valency
Sodium
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Lead
write symbol with the variable valency
Write the constituent elements and their symbols for the following compounds.
- Carbon monoxide
- Washing soda
Name the elements with the following symbols.
- Na
- W
- Ba
- Al
- U
Write a note on Greem symbols.
