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प्रश्न
Write the radical of the following valency:
Sulphate
विकल्प
1+
2+
3+
1−
2−
3−
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उत्तर
2−
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संबंधित प्रश्न
Define: Compounds
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)
In the chemical word equation – Zinc + Sulphuric acid → Zinc sulphate + Hydrogen
The molecular equation is :
Zn + H2SO4 → ZnSO4 + H2[g].
State what [g] represents.
State which element exists in the highest percentage in earth’s crust.
Give the symbol of the following element:
Carbon
State the type of element for the following:
Arsenic
State the valency of the following metallic element and write symbol with the valency
Sodium
Define the term ‘symbol’.
Name the elements with the following symbols.
- Na
- W
- Ba
- Al
- U
What is the rarest natural element on the earth?
