Advertisements
Advertisements
Question
Fill in the following blank with suitable word:
A sulphide ion has negative charge because it contains less ....................... than ...................
Advertisements
Solution
A sulphide ion carries a negative charge because it contains less number of protons than electrons.
APPEARS IN
RELATED QUESTIONS
What are polyatomic ions? Give examples.
Write the names of `"HgO"` compounds :
Magnesium and oxygen combine in the ratio of 3 : 2 by mass to form magnesium oxide. What mass of oxygen gas would be required to react completely with 24 g of magnesium ?
Name the particle which has 18 electrons, 18 neutrons and 17 protons in it.
Fill in the following blank with suitable word:
The particle which is formed by the loss of electrons by an atom is called..............
Explain the formation of (i) sodium ion, and (ii) chloride ion, from their respective atoms giving the number of protons and number of electrons in each one of them. What is the reason for positive charge on a sodium ion and a negative charge on a chloride ion ?
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
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
State if the following element or radical is divalent?
Nitride
