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प्रश्न
A particle X has 17 protons, 18 neutrons and 18 electrons. This particle is most likely to be :
विकल्प
a cation
an anion
a molecule
a compound
उत्तर
anion
X, most likely, is an anion because the number of electrons is more than the number of 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
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..............
An element X has a valency of 2. Write the simplest formula for oxide of the element.
Give example.
Bivalent acidic radicals
Write the basic radicals and acidic radicals of the following and then write the chemical formulae of these compound.
Magnesium phosphate
Fill in the blank:
A radical with one atom of sulphur and three atoms of oxygen are __________.
Name the following:
The radical containing one nitrogen and four hydrogen atoms.
State if the following element or radical is divalent?
Nickel
Match the names of ions and radicals from 1 to 10 with their correct answer from A to Q.
| Column A | Column B |
| 1. Hypochlorite | A: Hg2+ |
| 2. Permanganate | B: \[\ce{MnO_4^1-}\] |
| 3. Plumbous | C: Sn4+ |
| 4. Zincate | D: Pb2+ |
| 5. Nitride | E: Sn2+ |
| 6. Mercuric | F: Pb4+ |
| 7. Stannic | G: \[\ce{SO_3^2-}\] |
| 8. Nitrite | H: N3- |
| 9. Sulphite | I: \[\ce{NO_2^1-}\] |
| 10. Dichromate | J: \[\ce{MnO_4^2-}\] |
| K: Hg1+ | |
| L: \[\ce{SO_4^2-}\] | |
| M: CIO1- | |
| N: \[\ce{ZnO_2^2-}\] | |
| O: \[\ce{Cr_2O_7^2-}\] | |
| P: \[\ce{CrO_4^2-}\] | |
| Q: \[\ce{ClO_3^1-}\] |
