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प्रश्न
Write the radical of the following valency:
Calcium
विकल्प
1+
2+
3+
1−
2−
3−
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उत्तर
2+
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संबंधित प्रश्न
Explain the significance of the symbol H.
The scientist who proposed the first letter (or first letter and another letter) of the Latin or English name of
an element as its symbol, was :
Match the non-metallic elements – with their correct symbols. Non-metallic elements are:
| Non-Metallic elements | Symbol |
| (a) Carbon | (1) O |
| (b) Chlorine | (2) I |
| (c) Oxygen | (3) Si |
| (d) Phosphorus | (4) C |
| (e) Hydrogen | (5) Cl |
| (f) Nitrogen | (6) P |
| (g) Iodine | (7) F |
| (h) Bromine | (8) H |
| (i) Fluorine | (9) S |
| (j) Silicon | (10) Br |
| (k) Sulphur | (11) N |
Write the formula of the compound formed – given symbols and combining power or capacity (valency) of the following element in the compound.
Ca2+ NO31-
Give the symbol of the following element:
Mercury
Give the symbol of the following element:
Silicon
State the type of element for the following:
Zinc
Write the radical of the following valency:
Nitrate
Write the radical of the following valency:
Sulphur [Sulphide]
Write the radical of the following valency:
Iodine
