Question

Which orbital (or ring) contains the electron that calcium loses to form an ion?

Answer 1

Answer: 4s orbital contains the electron that calcium loses to form an ion

Step-by-step explanation:

Electronic configuration represents the total number of electrons that a neutral element contains. The electrons are filled according to Afbau's rule in order of increasing energies.

Calcium with atomic number 20 has 20 electrons and has 2 valence electrons which it can lose to for stable
`Ca^(2+)` ion. The valence elctrons are present in valence shell i.e. 4s.

`Ca:20:1s^22s^22p^63s^23p^64s^2`

`Ca^(2+):18:1s^22s^22p^63s^23p^64s^0`