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प्रश्न
Write the names of following elements Na, C, Kr, U, Ra, Fe, Co.
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उत्तर
| Symbol | Element |
| Na | Sodium |
| C | Carbon |
| Kr | Krypton |
| U | Uranium |
| Ra | Radium |
| Fe | Iron |
| Co | Cobalt |
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संबंधित प्रश्न
State whether the following statement is true or false:
The symbol of element cobalt is CO.
State the type of element for the following:
Mercury
Give the symbol of the following element:
Hydroxide
Give the formula of the following acid:
Hydrochloric
Give a reason – Magnesium [2, 8, 2] has valency 2+.
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Chloride
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Bromide
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Hydroxide
Write the symbols for the following elements.
- Oxygen
- Gold
- Calcium
- Cadmium
- Iron
Which letter is never used in any element symbol?
