The ion of an element has $3$ positive charges. The mass number of the atom is $27$ and the number of neutrons is $14$. What is the number of electrons in the ion?
- A$10$
- B$13$
- C$14$
- D$16$
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Similar Questions
Show diagrammatically the electron distributions in a sodium atom and a sodium ion and also give their atomic number.
Study the table given below and answer the questions that follow:
Particle Electrons Protons Neutrons $M$ $2$ $3$ $4$ $N$ $10$ $9$ $10$ $O$ $8$ $8$ $8$ $P$ $8$ $8$ $10$
$(a)$ Write the mass numbers of particles $M, N, O$ and $P$.
$(b)$ Select a cation and an anion from the above table.
| Particle | Electrons | Protons | Neutrons |
|---|---|---|---|
| $M$ | $2$ | $3$ | $4$ |
| $N$ | $10$ | $9$ | $10$ |
| $O$ | $8$ | $8$ | $8$ |
| $P$ | $8$ | $8$ | $10$ |
$(a)$ Write the mass numbers of particles $M, N, O$ and $P$.
$(b)$ Select a cation and an anion from the above table.
Medium
View SolutionGive a brief account of the development of the presently accepted model of the atom with the contributions made by different scientists. Write two features of this atomic model.
Medium
View SolutionAn atom with $3$ protons and $4$ neutrons will have a valency of
Easy
View SolutionDalton's atomic theory successfully explained:
$(i)$ Law of conservation of mass
$(ii)$ Law of constant composition
$(iii)$ Law of radioactivity
$(iv)$ Law of multiple proportions
$(i)$ Law of conservation of mass
$(ii)$ Law of constant composition
$(iii)$ Law of radioactivity
$(iv)$ Law of multiple proportions
Medium
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