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प्रश्न
State which element exists in the highest percentage in atmosphere.
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उत्तर
Nitrogen (N) — 78%
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संबंधित प्रश्न
Give two examples of the following:
Liquid + Liquid mixture:
Give the symbol of the following element:
Mercury
State the type of element for the following:
Platinum
Give three reasons why – carbon dioxide is considered a compound, while carbon – an element.
Define the term ‘valency’.
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
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Tin
write symbol with the variable valency
Complete the statement given below by filling in the blanks with the correct words.
From the elements – He, Br, Pt and O; the element which forms a polyatomic molecule is ________ and which is liquid at room temperature is ________.
What does the symbol '⇌' present in a chemical equation, mean?
______ of some elements are derived from Latin or Greek names of the elements.
