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प्रश्न
Name the particle which has 18 electrons, 18 neutrons and 17 protons in it.
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उत्तर
The particle which has 18 electrons, 18 neutrons and 17 protons is a negatively-charged Chloride ion (Cl−).
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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)
State whether the following statements are true or false:
A sodium ion has positive charge because it has more protons than a neutral atom.
Fill in the following blank with suitable word:
The particle which is formed by the loss or gain of electrons by an atom is called..............
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.
Basic radicals
Give example.
Bivalent acidic radicals
Write the basic radicals and acidic radicals of the following and then write the chemical formulae of these compound.
Calcium silicate
Fill in the blank:
Sodium chloride has two radicals. Sodium is a _____ radical while chloride is _____ radical.
State if the following element or radical is divalent?
Bromide
State if the following element or radical is divalent?
Bisulphite
