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Based on its location on the periodic table, which element would be most likely to form a negative ion?

A. Aluminum (Al)
B. Copper (Cu)
C. Sodium (Na)
D. Fluorine (F)

Respuesta :

Fluorine ONLY form\s an ion with a -1 charge. The other three are metals, and metals for positively charged ions.

Answer: The element which is most likely to form negative ion is fluorine.

Explanation:

An ion is formed when a neutral atom looses or gains electrons.

  • When an atom looses electrons, it results in the formation of positive ion known as cation.
  • When an atom gains electrons, it results in the formation of negative ion known as anion.

For the given options:

  • Option A: Aluminium

Aluminium is the 13th element of the periodic table having electronic configuration of [tex]1s^22s^22p^63s^23p^1[/tex]

This element will loose 3 electrons to attain stable electronic configuration and will form [tex]Al^{3+}[/tex] ion

  • Option B: Copper

Copper is the 29th element of the periodic table having electronic configuration of [tex]1s^22s^22p^63s^23p^64s^23d^9[/tex]

This element will loose 2 electrons to attain stable electronic configuration and will form [tex]Cu^{2+}[/tex] ion

  • Option C: Sodium

Sodium is the 11th element of the periodic table having electronic configuration of [tex]1s^22s^22p^63s^1[/tex]

This element will loose 1 electron to attain stable electronic configuration and will form [tex]Na^{+}[/tex] ion

  • Option D: Fluorine

Fluorine is the 9th element of the periodic table having electronic configuration of [tex]1s^22s^22p^5[/tex]

This element will gain 1 electron to attain stable electronic configuration and will form [tex]F^{-}[/tex] ion

Hence, the element which is most likely to form negative ion is fluorine.

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