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प्रश्न
State if the following element or radical is divalent?
Chromium
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उत्तर
Chromium element or radical is not divalent.
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संबंधित प्रश्न
What is the name of a particle which contains 10 electrons, 11 protons and 12 neutrons ?
Fill in the following blank with suitable word :
The particle which is formed by the gain of electrons by an atom is called ..............
An element X has a valency of 2. Write the simplest formula for oxide of the element.
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What is an ion ? How is an ion formed ? Explain with the help of two examples of different ions.
The valencies (or charges) of some of the ions are given below :
| Ion | Valency (Charge) | Ion | Valency (Charge) |
| Sodium ion | 1+ | Bromide ion | 1– |
| Ammonium ion | 1+ | Hydroxide ion | 1– |
| Calcium ion | 2+ | Sulphate ion | 2– |
| Lead ion | 2+ | Phosphate ion | 3– |
Using this information, write down the formulae of the following compounds :
(i) Sodium phosphate
(ii) Ammonium sulphate
(iii) Calcium hydroxide
(iv) Lead bromide
Give example.
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Write the basic radicals and acidic radicals of the following and then write the chemical formulae of these compound.
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