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प्रश्न
State whether the following statements are true or false:
A sodium ion has positive charge because it has more protons than a neutral atom.
उत्तर
False. A sodium ion carries a positive charge because it has less number of electrons than a neutral atom.
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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 ZnS compounds :
Tick (√) the correct answer.
The sulphate radical is written as S042-. What is the formula of calcium sulphate ?
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..............
An element X has a valency of 2. Write the simplest formula for oxide of the element.
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
State if the following element or radical is divalent?
Nitride
State if the following element or radical is divalent?
Carbide
State if the following element or radical is divalent?
Chromium
