Advertisements
Advertisements
प्रश्न
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
Advertisements
उत्तर
|
sr. no. |
Element |
Symbols | Free radicals | charge on the radicals |
| i. | Mercury | Hg | Hg+ | +1 |
| Hg2+ | +2 | |||
| ii. | Potassium | K | K+ | +1 |
| iii. | Nitrogen | N | N3- | -3 |
| iv. | Copper | Cu | Cu+ | +1 |
| Cu2+ | +2 | |||
| v. | Sulphur | S | S2- | -2 |
| vi. | Carbon | C | C+ | +1 |
|
vii. |
Chlorine |
Cl | Cl- | -1 |
| viii. | Oxygen | O | O2- | -2 |
APPEARS IN
संबंधित प्रश्न
How many atoms are present in a PO43− ion?
What are polyatomic ions? Give examples.
Calculate the number of aluminium ions present in 0.051 g of aluminium oxide.
(Hint: The mass of an ion is the same as that of an atom of the same element. Atomic mass of Al = 27 u)
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 :
A liquid compound X of molecular mass 18 u can be obtained from a number of natural sources. All the animals and plants need liquid X for their survival. When an electric current is passed through 200 grams of pure liquid X under suitable conditions, then 178 grams of gas Y and 22 grams of gas Z are produced. Gas Y is produced at the positive electrode whereas gas Z is obtained at the negative electrode. Moreover, gas Y supports combustion whereas gas Z burns itself causing explosions.
- Name (i) liquid X (ii) gas Y, and (iii) gas Z.
- What is the ratio of the mass of element Z to the mass of element Y in the liquid X ?
- Which law of chemical combination is illustrated by this example ?
- Name two sources of liquid X.
- State an important use of Y in our life.
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 of electrons by an atom is called..............
What is the difference between a cation and an anion ? Explain with examples.
Give example.
Positive radicals
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.
Chromium sulphate
Write the basic radicals and acidic radicals of the following and then write the chemical formulae of these compound.
Potassium manganate
Write the basic radicals and acidic radicals of the following and then write the chemical formulae of these compound.
Nickel bisulphate
Differentiate between the following with suitable examples- A basic radical and an acid radical
Fill in the blank:
A radical with one atom of sulphur and three atoms of oxygen are __________.
State if the following element or radical is divalent?
Dichromate
