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प्रश्न
Tick (√) the correct answer.
The sulphate radical is written as S042-. What is the formula of calcium sulphate ?
पर्याय
Ca(S04)2
Ca2(S04)
Ca(S04)3
CaS04
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उत्तर
CaS04
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संबंधित प्रश्न
Write the names of `"NH"_4"OH"` compounds :
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
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 ?
Give example.
Bivalent acidic radicals
Give example.
Trivalent basic radicals
Write the basic radicals and acidic radicals of the following and then write the chemical formulae of these compound.
Stannic oxide
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.
Stannic phosphate
Fill in the blank:
A radical with one atom of sulphur and three atoms of oxygen are __________.
