Question

The element that would form anion by gaining electrons in a chemical reaction is _______________

a.Potassium

b.Calcium

c.Fluorine

d.Iron brainly

Answer 1

Explanation:

I think their answer will be d

Answer 2

The element that would form anion 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.

Metals are the elements which have a tendency to loose electrons and thus they form cations. Example: Sodium will loose 1 electron to form $Na^+$ ion.

Non-metals are the elements which have a tendency to gain electrons and thus they form anions. Example: Fluorine will gain 1 electron to form $F^-$ ion.

For the given options:

Option a: Potassium

Potassium is the 19th element of the periodic table having electronic configuration of $1s^22s^22p^63s^23p^64s^1$

It will loose 1 electron to form $K^+$ ion

Option b: Calcium

Calcium is the 20th element of the periodic table having electronic configuration of $1s^22s^22p^63s^23p^64s^2$

It will loose 2 electrons to form $Ca^{2+}$ ion

Option c: Fluorine

Fluorine is the 9th element of the periodic table having electronic configuration of $1s^22s^22p^5$

It will gain 1 electron to form $F^-$ ion

Option d: Iron

Iron is the 26th element of the periodic table having electronic configuration of $1s^22s^22p^63s^23p^64s^23d^6$

It will loose 2 electrons to form $Fe^{2+}$ ion

Learn more about ions:

https://brainly.in/question/7586018

https://brainly.in/question/1781652

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