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प्रश्न
Write the symbols for the following elements and classify them as solid, liquid and gas. Aluminum, Carbon, Chlorine, Mercury, Hydrogen and Helium
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उत्तर
| Element | Symbol | Classification |
| Aluminum | Al | Solid |
| Carbon | C | Solid |
| Chlorine | Cl | Gas |
| Mercury | Hg | Liquid |
| Hydrogen | H | Gas |
| Helium | He | Gas |
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संबंधित प्रश्न
Name the element used as a standard for atomic mass scale.
Give two examples of the following:
Solid + Liquid mixture
Match the symbols of non-metallic elements with their correct combining power or capacity.
(a) O
(b) S
(c) Cl
Combining power or capacity A : 3; B : 2; C : 1. (negative valencies)
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
In the chemical word equation –
Zinc + Sulphuric acid → Zinc sulphate + Hydrogen.
State the reactants and products of the above reaction. What does the arrow indicate?
Give the symbol of the following element:
Oxygen
Write the chemical formula of the following:
magnesium oxide
Give a reason – Magnesium [2, 8, 2] has valency 2+.
______ of some elements are derived from Latin or Greek names of the elements.
What does a chemical symbol represent?
