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प्रश्न
Choose the correct answer from the options given below.
The number of carbon atoms in a hydrogen carbonate radical is
विकल्प
One
Two
Three
Four
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उत्तर
One
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संबंधित प्रश्न
What are polyatomic ions? Give examples.
An element X has a valency of 2. Write the simplest formula for bromide of the element.
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.
Positive radicals
Write the basic radicals and acidic radicals of the following and then write the chemical formulae of these compound.
Magnesium phosphate
Fill in the blank:
Sodium chloride has two radicals. Sodium is a _____ radical while chloride is _____ radical.
Name the following radicals and give their valencies:
1. SO4
2. CO3
3. OH4.
4.Cr2O7
State if the following element or radical is divalent?
Nickel
State if the following element or radical is divalent?
Sulphite
Atoms that carry positive or negative charges are called ______.
