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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
Write the full form of IUPAC. Name the elements represented by the following symbols:
Au, Pb, Sn, Hg
Give a reason why elements are tabulated in a table called the ‘Periodic table’.
Match the formulas of the following of bases with their correct names.
Bases – (a) NaOH (b) KOH (c) Ca(OH)2 (d) Zn(OH)2
Names – (1) Potassium hydroxide (2) Zinc hydroxide (3) Aluminium hydroxide (4) Calcium hydroxide (5) Sodium hydroxide
Give the symbol of the following element:
Mercury
Give the symbol of the following element:
Sulphate
Give the symbol of the following element:
Hydroxide
Write the radical of the following valency:
Nitrate
Give the formula of the following acid:
Nitric
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).
Sulphite
______ of some elements are derived from Latin or Greek names of the elements.
