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प्रश्न
Give example.
Positive radicals
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उत्तर
H+, Na+, K+, Ag+, Cu+, Hg+
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संबंधित प्रश्न
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)
Name the following radicals :
SO42
Tick (√) the correct answer.
The sulphate radical is written as S042-. What is the formula of calcium sulphate ?
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 ?
Fill in the following blank with suitable word:
A sulphide ion has negative charge because it contains less ....................... than ...................
An element X has a valency of 2. Write the simplest formula for oxide 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
Give example.
Bivalent acidic radicals
Give example.
Trivalent basic radicals
What do you understand by the following terms?
Basic radical
Write the basic radicals and acidic radicals of the following and then write the chemical formulae of these compound.
Ferrous sulphide
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.
Stannic oxide
Differentiate between the following with suitable examples- A basic radical and an acid radical
Name the following:
The radical containing one nitrogen and four hydrogen atoms.
State if the following element or radical is divalent?
Bromide
State if the following element or radical is divalent?
Nitride
State if the following element or radical is divalent?
Bisulphite
State if the following element or radical is divalent?
Permanganate
