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Option 4 : It will form a tri-positive ion to acquire stable configuration.
The correct answer is It will form a tri-positive ion to acquire a stable configuration.
Concept:
Electronic configuration:
- It can be defined as the distribution of electrons around the nucleus in different energy levels (shells).
- It was suggested by Bohr and Bury.
Rules for writing the electronic configuration of an atom:
- The maximum number of electrons present in a shell is given by the formula 2n2, where ‘n’ is the orbit number or energy level index, 1,2,3, and so on.
- Hence, the maximum number of electrons in different shells is as follows:
- The First orbit or K-shell will be = 2 × 12 = 2,
- The second orbit or L-shell will be = 2 × 22 = 8,
- The Third orbit or M-shell will be = 2 × 32 = 18,
- The fourth orbit or N-shell will be= 2 × 42= 32, and so on.
- The maximum number of electrons that can be accommodated in the outermost orbit is 8.
- Electrons are not accommodated in a given shell unless the inner shells are filled. That is, the shells are filled in a step-wise manner.
Ions:
- An atom or group of atoms that bears one or more positive or negative electrical charges, is called an ion.
- Cations: Positively charged ions formed by losing electrons.
- Anions: Negatively charged ions are formed by gaining electrons.
Explanation:
- Element X has 3 electrons in the M shell.
- So, its electronic configuration is 2, 8, 3.
- An element having less than 4 electrons in its outermost shell tends to lose the electrons to form a cation.
Thus, It will form a tri-positive ion to acquire a stable configuration.
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