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प्रश्न
Write the chemical formula of the following:
magnesium oxide
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उत्तर
MgO
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संबंधित प्रश्न
The English name of an element is potassium, its Latin name will be :
An element which can exhibit valencies of 2, 4 and 6 can be :
Match the metallic elements – with their correct symbols Metallic elements
| Metallic elements | Symbol |
| (a) Potassium | (1) Ca |
| (b) Sodium | (2) Zn |
| (c) Calcium | (3) Pb |
| (d) Magnesium | (4) Hg |
| (e) Zinc | (5) Cu |
| (f) Aluminum | (6) Au |
| (g) Iron | (7) K |
| (h) Lead | (8) Fe |
| (i) Copper | (9) Al |
| (j) Mercury | (10) Na |
| (k) Silver | (11) Mg |
| (l) Platinum | (12) Pt |
| (m) Gold | (13) Ag |
Give the symbol and the number of atoms of the following elements present in carbon dioxide.
Give the symbol of the following element:
Chlorine [chloride]
Give the symbol of the following element:
Phosphorus
Give the symbol of the following element:
Hydroxide
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Mercury
write symbol with the variable valency
What does the symbol '→' present in a chemical equation, mean?
What does the symbol '(s)' present in a chemical equation, mean?
