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प्रश्न
Write the chemical formula of the following:
Sodium bromide
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उत्तर
NaBr
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संबंधित प्रश्न
The anion of an element has ______.
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of it
Oxide
An atom of an element is denoted by a “symbol” Explain the meaning of the term ‘symbol’. State a reason for representing the following element by its symbol.
Helium by ‘He’
Match the symbols of metallic elements – with their correct combining power or capacity.
(a) K
(b) Zn
(c) Al
(d) Na
(e) Ca
Combining power or capacity – A : 3 ; B : 2 ; C : 1. (positive valencies)
Write the formula of the compound formed – given symbols and combining power or capacity (valency) of the following element in the compound.
Na1+ Cl1-
Give the symbol of the following element:
Potassium
Give the formula of the following gas:
Sulphur dioxide
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Copper
write symbol with the variable valency
Define the term ‘symbol’.
What does the symbol '(aq.)' present in a chemical equation, mean?
