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प्रश्न
Write the radical of the following valency:
Sulphur [Sulphide]
विकल्प
1+
2+
3+
1−
2−
3−
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उत्तर
2−
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संबंधित प्रश्न
What do you understand by :
Noble gases
What do the following symbol stand for?
H
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)
Elements are mainly classified into metals and non-metals. State six properties of metals which differ from non-metals.
Give the symbol of the following element:
Copper
State the type of element for the following:
Zinc
State the type of element for the following:
Aluminium
Write the chemical formula of the following:
zinc oxide
Name the following:
An acid whose formula is ‘H2CO3’.
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
