Explanation:
After the electron configuration, the last shell of the beryllium atom has two electrons. In this case, both the valence and valence electrons of beryllium are 2. We know the details about this. The elements that have 1, 2, or 3 electrons in the last shell donate the electrons in the last shell during bond formation.
Answer:
C. oxygen
Explanation:
oxygen cannot for a polar covalent bond with another oxygen atom
molecule- when two or more of the same atoms of an element chemically join together
ex: O2
compund- when the two types of atoms are different
ex: H2O
