Advertisements
Advertisements
प्रश्न
Name the following radicals :
Cr2072
Advertisements
उत्तर
Cr2072- = Dichromate
APPEARS IN
संबंधित प्रश्न
What are polyatomic ions? Give examples.
Write the symbols and valencies of the following radicals:
- Magnesium ion
- Ammonium
- Carbonate
- Nitrate
- Oxide
- Bisulphate
- Aluminium ion
Tick (√) the correct answer.
The sulphate radical is written as S042-. What is the formula of calcium sulphate ?
Fill in the following blank with suitable word :
The particle which is formed by the gain of electrons by an atom is called ..............
A particle X has 17 protons, 18 neutrons and 18 electrons. This particle is most likely to be :
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
Fill in the blank:
Sodium chloride has two radicals. Sodium is a _____ radical while chloride is _____ radical.
Name the following:
The radical containing one nitrogen and four hydrogen atoms.
State if the following element or radical is divalent?
Carbide
State if the following element or radical is divalent?
Chromium
