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प्रश्न
Fill in the following blank with suitable word:
A potassium ion has positive charge because it contains less............... than.....................
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उत्तर
A potassium ion carries a positive charge because it contains less number of electrons than protons.
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संबंधित प्रश्न
The valency of calcium is 2. Write the valencies of other radical in the following :
- CaO
- Ca(OH)2
- CaC03
- CaCl2
Write the names of `"NH"_4"OH"` compounds :
Write the names of `"H"_2"S"` compounds :
Define ‘formula mass’ of a compound.
Fill in the following blank with suitable word:
The particle which is formed by the loss of electrons by an atom is called..............
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
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
What do you understand by the following terms?
Acid radical
State if the following element or radical is divalent?
Bromide
