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प्रश्न
What is the name of a particle which contains 10 electrons, 11 protons and 12 neutrons ?
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उत्तर
The particle that contains 10 electrons, 11 protons and 12 neutrons is a positively-charged sodium ion (Na+).
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संबंधित प्रश्न
What are polyatomic ions? Give examples.
The valency of calcium is 2. Write the valencies of other radical in the following :
- CaO
- Ca(OH)2
- CaC03
- CaCl2
State whether the following statements are true or false :
A chloride ion has negative charge because it has more electrons 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.
Trivalent basic radicals
Write the basic radicals and acidic radicals of the following and then write the chemical formulae of these compound.
Stannic phosphate
Name the following radicals and give their valencies:
1. SO4
2. CO3
3. OH4.
4.Cr2O7
Select the correct answer to the statement given below:
An elementary particle of matter – of a group of atoms of different elements behaving as a single unit with charge on the group.
State if the following element or radical is divalent?
Sulphite
