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प्रश्न
A particle P has 18 electrons, 20 neutrons and 19 protons. This particle must be :
पर्याय
a molecule
a binary compound
an anion
a cation
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उत्तर
cation
Particle P must be a cation.
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संबंधित प्रश्न
Name the following radicals :
SO42
Name the following radicals :
Cr2072
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:
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.
Explain the formation of (i) sodium ion, and (ii) chloride ion, from their respective atoms giving the number of protons and number of electrons in each one of them. What is the reason for positive charge on a sodium ion and a negative charge on a chloride ion ?
Give example.
Basic radicals
Write the basic radicals and acidic radicals of the following and then write the chemical formulae of these compound.
Potassium manganate
Name the following:
The radical containing one nitrogen and four hydrogen atoms.
