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Question
Fill in the following blank with suitable word:
A potassium ion has positive charge because it contains less............... than.....................
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Solution
A potassium ion carries a positive charge because it contains less number of electrons than protons.
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RELATED QUESTIONS
Name the following radicals :
Cr2072
Fill in the following blank with suitable word:
A sulphide ion has negative charge because it contains less ....................... than ...................
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
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
Write the basic radicals and acidic radicals of the following and then write the chemical formulae of these compound.
Sodium thiosulphate
Name the following radicals and give their valencies:
1. SO4
2. CO3
3. OH4.
4.Cr2O7
State if the following element or radical is divalent?
Bromide
State if the following element or radical is divalent?
Sulphite
State if the following element or radical is divalent?
Nitride
State if the following element or radical is divalent?
Dichromate
