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प्रश्न
Write the radical of the following valency:
Hydroxide
विकल्प
1+
2+
3+
1−
2−
3−
MCQ
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उत्तर
1−
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संबंधित प्रश्न
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 |
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 |
Give the symbol of the following element:
Antimony
State the type of element for the following:
Zinc
State the type of element for the following:
Chlorine
Give the symbol of the following element:
Phosphate
Give the formula of the following gas:
Sulphur dioxide
Select the correct answer from the choice in the bracket.
The formula of caustic soda.
Which letter is never used in any element symbol?
