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Which of the following elements is stable?
A. Boron, atomic number 5
B. Neon, atomic number 10
C. Fluorine, atomic number 9
D. Carbon, atomic number 6

Respuesta :

W0lf93
The right answer for this question is B - Neon Is stable, we know this due to the fact it has an atomic number or 10 and is a noble gas. For an element to be stable, it must have the necessary energy for the nucleus to be bound together.

Answer: Option (B) is the correct answer.

Explanation:

An atom is stable when it has completely filled orbitals. This means that K shell have 2 electrons, L shell have 8 electrons, M shell have 18 electrons and so on.

Therefore, electronic distribution of given elements will be as follows.

Boron has electronic configuration 2, 3.

Neon has electronic configuration 2, 8.

Fluorine has electronic configuration 2, 7.

Carbon has electronic configuration 2, 4.

Therefore, out of the given elements neon is stable.

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