Advertisements
Advertisements
प्रश्न
Give example.
Positive radicals
उत्तर
H+, Na+, K+, Ag+, Cu+, Hg+
APPEARS IN
संबंधित प्रश्न
How many atoms are present in a PO43− ion?
Name the following radicals :
Cr2072
The valency of calcium is 2. Write the valencies of other radical in the following :
- CaO
- Ca(OH)2
- CaC03
- CaCl2
Write the names of `"HgO"` compounds :
Fill in the following blank with suitable word :
The particle which is formed by the gain of electrons by an atom is called ..............
Fill in the following blank with suitable word:
The particle which is formed by the loss or gain of electrons by an atom is called..............
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 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
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.
Bivalent acidic radicals
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 compound.
Chromium sulphate
Write the basic radicals and acidic radicals of the following and then write the chemical formulae of these compound.
Magnesium phosphate
Write the basic radicals and acidic radicals of the following and then write the chemical formulae of these compound.
Sodium zincate
Select the correct answer to the statement given below:
An elementary particle of matter – of a group of atoms of different elements behaving as a single unit with charge on the group.
Match the radicals in List I with their correct names from List II.
| List I | List II | |
| 1. `"NO"_3^(1-)` | A: Bisulphite | F: Sulphate |
| 2. `"HSO"_4^(1-)` | B: Phosphate | G: Nitrate |
| 3. `"SO"_4^(2-)` | C: Carbonate | H: Phosphite |
| 4. `"PO"_4^(3-)` | D: Nitrite | I: Sulpite |
| 5. `"HCO"_3^(1-)` | E: Bicarbonate | J: Bisulphate |
State if the following element or radical is divalent?
Dichromate
