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प्रश्न
Write the chemical formula of the following:
Sodium bromide
उत्तर
NaBr
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संबंधित प्रश्न
Write the names and symbols of the first twenty elements that you have studied in class VI & VII.
The formula of the sulphate of an element X is X2(SO4)3. The formula of nitride of element X will be :
How are the elements with variable valency named? Explain with an example.
Match the formulas of the following gases with their correct names :
Gases - (a) H2 (b) N2 (c) O2 (d) Cl2 (e) HCI (f) NH3 (g) CO (h) CO2 (i) SO2 (j) NO (k) NO2.
Names:
(1) Ammonia (2) Nitrogen Dioxide (3) Oxygen (4) Hydrogen (5) Nitrogen (6) Chlorine (7) Carbon Monoxide (8) Sulphur Dioxide (9) Nitrogen Monoxide (10) Carbon Dioxide (11) Hydrogen Chloride
Give the symbol of the following element:
Arsenic
Give the symbol of the following element:
Chlorine [chloride]
Give the symbol of the following element:
Lead
Write the radical of the following valency:
Sulphite
Write the radical of the following valency:
Oxygen
What is the significance of the symbol of an element?
