B. caulculating the distance between objects in the solar system
Bef2 is the compound that has the most covalent character. Whichever element has the greatest electronegativity has the least difference and most covalent character.
It's B Covalent.Now I'll add more words since the thing says I need to write at least 20 characters.
Answer:
It's called the shielding effect
Explanation:
It describes the decrease in attraction between an electron and the nucleus in any atom with more than one electron shell. (I hope this helps)
