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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
Give the names and symbols of five familiar substances which you think are elements.
What is the significance of the symbol of an element ? Explain with the help of an example.
How are the elements with variable valency named? Explain with an example.
Elements are mainly classified into metals and non-metals. State six properties of metals which differ from non-metals.
State the type of element for the following:
Radon
Write the radical of the following valency:
Hydroxide
Give the formula of the following gas:
Carbon monoxide
State the valency of the following metallic element and write symbol with the valency
Magnesium
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
Write a note on Greem symbols.
