Advertisements
Advertisements
Question
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
Advertisements
Solution
| Name | Symbol | Ion | Valency |
| Dichromate | \[\ce{Cr2O7}\] | \[\ce{[Cr2O7]^{2-}}\] | −2 |
APPEARS IN
RELATED QUESTIONS
Which particular atom of the above element is used for this purpose ?
Write the full form of IUPAC. Name the elements represented by the following symbols:
Au, Pb, Sn, Hg
What do the following symbol stand for?
H
How are the elements with variable valency named? Explain with an example.
Match the symbols of non-metallic elements with their correct combining power or capacity.
(a) O
(b) S
(c) Cl
Combining power or capacity A : 3; B : 2; C : 1. (negative valencies)
Give the symbol of the following element:
Chlorine [chloride]
Write the chemical formula of the following:
calcium sulphide
State the valency of the following metallic element and write symbol with the valency
Sodium
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).
Bisulphate
The first letter of a symbol is always written as a ______ letter and the second letter as a ______ letter.
