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प्रश्न
State if the following element or radical is divalent?
Dichromate
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उत्तर
Dichromate element or radical is divalent.
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संबंधित प्रश्न
Write the names of `"HgO"` compounds :
Write the names of ZnS compounds :
Write the names of `"H"_2"S"` compounds :
A liquid compound X of molecular mass 18 u can be obtained from a number of natural sources. All the animals and plants need liquid X for their survival. When an electric current is passed through 200 grams of pure liquid X under suitable conditions, then 178 grams of gas Y and 22 grams of gas Z are produced. Gas Y is produced at the positive electrode whereas gas Z is obtained at the negative electrode. Moreover, gas Y supports combustion whereas gas Z burns itself causing explosions.
- Name (i) liquid X (ii) gas Y, and (iii) gas Z.
- What is the ratio of the mass of element Z to the mass of element Y in the liquid X ?
- Which law of chemical combination is illustrated by this example ?
- Name two sources of liquid X.
- State an important use of Y in our life.
An element X has a valency of 2. Write the simplest formula for oxide of the element.
The valencies (or charges) of some of the ions are given below :
Ion Valency Ion Valency (Charge) (Charge)
Sodium ion 1+ Nitrate ion 1–
Copper ion 2+ Sulphide ion 2–
Using this information, write down the formulae of :
- Sodium sulphide
- Copper nitrate
What do you understand by the following terms?
Basic radical
Fill in the blank:
Sodium chloride has two radicals. Sodium is a _____ radical while chloride is _____ radical.
Choose the correct answer from the options given below.
The number of carbon atoms in a hydrogen carbonate radical is
State if the following element or radical is divalent?
Bisulphite
