Question

1. what ion would a stable atom of calcium form? (0.5 points) *

ca²-

ca³-

ca³+

ca¹+

ca¹-

ca²+

1. write the formula for lithium phosphide. (0.5 points) *

enter your answer

Explanation:

Calcium (Ca) is in group 2 of the periodic table. Atoms in group 2 have 2 valence electrons. To achieve a stable electron configuration (similar to a noble gas), they lose 2 electrons. When an atom loses electrons, it forms a positive ion (cation). The number of electrons lost is equal to the charge of the ion. So, calcium forms a \(Ca^{2 +}\) ion.

Answer:

\(Ca^{2 +}\)