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प्रश्न
State the type of element for the following:
Fluorine
पर्याय
Metal
Non-metal
Metalloid
Noble gas
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उत्तर
Non-metal
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संबंधित प्रश्न
Give the symbols and valencies of following radicals:
(a) Hydroxide (b) Chloride
(c) Carbonate (d) ammonium
(e) Nitrate
Write the names of following elements Na, C, Kr, U, Ra, Fe, Co.
Define: Compounds
What do the following symbol stand for?
2H
Match the noble gases – with their correct symbols:
| Noble gases | Symbols |
| (a) Helium | (1) Ar |
| (b) Neon | (2) Xe |
| (c) Argon | (3) Rn |
| (d) Krypton | (4) He |
| (e) Xenon | (5) Kr |
| (f) Radon | (6) Ne |
State which element exists in the highest percentage in human body.
Give the symbol of the following element:
Arsenic
Write the radical of the following valency:
Oxygen
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Lead
write symbol with the variable valency
What does the symbol '(s)' present in a chemical equation, mean?
