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प्रश्न
Give the formula of the following gas:
Ammonia
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उत्तर
Ammonia — NH3
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संबंधित प्रश्न
Write the names of following elements Na, C, Kr, U, Ra, Fe, Co.
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Fill in the blank:
Dalton used symbol _____ for oxygen and _____ for hydrogen.
Write the radical of the following valency:
Aluminium
Give the formula of the following gas:
Hydrogen chloride
Select the correct answer to the statement given below:
An element present in the earth’s crust, atmosphere and the human body.
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Mercury
write symbol with the variable valency
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Oxide
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Nitride
Name the elements with the following symbols.
- Na
- W
- Ba
- Al
- U
