How many electrons does boron lose when forming a ion? a. 1 b. 2 c. 3 d. 4 (not d)

(Answer) (C) 3

Boron is a non-metal with atomic number 5. The electronic configuration of boron atom is [He]2s^22p^1.

Boron atom has the tendency to obtain stable electronic configuration like its nearest noble gas helium by losing electrons. Boron atom usually loses 3 electrons from its outermost electronic shell to form a cation with +3 charge.

Therefore, boron atom loses 3 electrons while forming an ion.

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