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प्रश्न
Give the symbol and the number of atoms of the following elements present in zinc chloride.
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उत्तर
Zinc Chloride ZnCl2
| Elements | Symbols |
| (Zinc) | Zn |
| [Chlorine (Chloride)] | Cl |
No. of atoms of this element present
1 atom of - Zn, 2 atoms of - Cl
संबंधित प्रश्न
Give the symbols and valencies of following radicals:
(a) Hydroxide (b) Chloride
(c) Carbonate (d) ammonium
(e) Nitrate
A student wants to have 3.011 × 1023 atoms each of magnesium and carbon elements. For this purpose, he will have to weigh :
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)
State which element exists in the highest percentage in atmosphere.
State the type of element for the following:
Lead
Give the symbol of the following element:
Magnesium
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).
Sulphite
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).
Dichromate
Give the qualitative and quantitative meaning of the term ‘symbol’.
How many elements are known at present?
