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प्रश्न
What does the symbol '→' present in a chemical equation, mean?
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उत्तर
'→' Arrow separates reactants from the products.
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संबंधित प्रश्न
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of it
Chloride
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 names and symbols of the first twenty elements of the periodic table.
State the type of element for the following:
potassium
Give the symbol of the following element:
Chlorine [chloride]
State the type of element for the following:
Silicon
Write the radical of the following valency:
Sulphur [Sulphide]
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Silver
write symbol with the variable valency
Describe the different ways in which we can write the symbols of elements. Give appropriate examples.
Which letter is never used in any element symbol?
