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प्रश्न
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).
Dichromate
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उत्तर
| Name | Symbol | Ion | Valency |
| Dichromate | \[\ce{Cr2O7}\] | \[\ce{[Cr2O7]^{2-}}\] | −2 |
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संबंधित प्रश्न
Give two examples of the following :
Solid + Solid mixture
Which particular atom of the above element is used for this purpose ?
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Ca2+ NO31-
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Acids – (a) HCI (b) HNO3 (c) H2SO4 (d) H2CO3
Names – (1) Carbonic acid (2) Sulphuric acid (3) Hydrochloric acid (4) Nitric acid
State the type of element for the following:
potassium
Give the symbol of the following element:
Mercury
Give the symbol of the following element:
Iodine
Give the symbol of the following element:
Bromine [bromide]
The first letter of a symbol is always written as a ______ letter and the second letter as a ______ letter.
