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प्रश्न
Give example.
Positive radicals
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उत्तर
H+, Na+, K+, Ag+, Cu+, Hg+
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संबंधित प्रश्न
What are polyatomic ions? Give examples.
Name the following radicals :
Cr2072
Write the names of `"H"_2"S"` compounds :
Tick (√) the correct answer.
The sulphate radical is written as S042-. What is the formula of calcium sulphate ?
State whether the following statements are true or false:
A sodium ion has positive charge because it has more protons than a neutral atom.
What is the name of a particle which contains 10 electrons, 11 protons and 12 neutrons ?
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.
Basic radicals
Give example.
Composite radicals
Write symbols of the following elements and the radicals obtained from them and indicate the charge on the radicals.
Mercury, potassium, nitrogen, copper, sulphur, carbon, chlorine, oxygen
What do you understand by the following terms?
Acid radical
Write the basic radicals and acidic radicals of the following and then write the chemical formulae of these compounds.
Barium sulphate
Write the basic radicals and acidic radicals of the following and then write the chemical formulae of these compound.
Sodium thiosulphate
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?
Lithium
State if the following element or radical is divalent?
Chromium
State if the following element or radical is divalent?
Permanganate
Atoms that carry positive or negative charges are called ______.
