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प्रश्न
State the valency of the following metallic element and write symbol with the valency
Calcium
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उत्तर
Metals have positive valency 1, 2 or 3,
| Element | Symbol | Valency |
| Calcium | \[\ce{Ca}\] | \[\ce{Ca^2+}\] |
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संबंधित प्रश्न
Write the names and symbols of the first twenty elements that you have studied in class VI & VII.
Write the symbols of helium, silver, krypton, antimony, barium.
Name the element used as a standard for atomic mass scale.
Give two symbols which have been derived from the "English names" of the elements.
Match the formulas of the following of acids with their correct names:
Acids – (a) HCI (b) HNO3 (c) H2SO4 (d) H2CO3
Names – (1) Carbonic acid (2) Sulphuric acid (3) Hydrochloric acid (4) Nitric acid
State the type of element for the following:
Arsenic
Write the radical of the following valency:
Carbonate
Give the formula of the following gas:
Nitrous oxide
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).
Bisulphate
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).
Zincate
