Advertisements
Advertisements
Question
Match the symbols of – radicals – with their correct combining power or capacity, (valency).
(a) OH
(b) So4
(c) No3
(d) Co3
Combining power or capacity – A : 3; B : 2; C : 1. (negative valencies)
Advertisements
Solution
(a) OH — Valency- 1 (C)
(b) So4 — Valency- 2 (B)
(c) No3 — Valency- 1 (C)
(d) Co3 — Valency- 2 (B)
RELATED QUESTIONS
Select elements and compounds from the following list: Iron, plaster of paris, chalk, common salt, copper, aluminium, calcium oxide, cane sugar, carbon, silica, sodium sulphate, uranium, potassium carbonate, silver, carbon dioxide.
The symbol of a metal element which is used in making thermometers is :
Explain the terms 'valency' and 'variable valency'.
State which element exists in the highest percentage in atmosphere.
Give the symbol of the following element:
Boron
Write the radical of the following valency:
Oxygen
Write the radical of the following valency:
Sulphur [Sulphide]
Give the formula of the following gas:
Sulphur dioxide
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).
Hydroxide
Name three metals whose symbols are derived from the first letter of the name of the element.
