select all of the following statements that correctly describe electronegativity: question options: A) the most electronegative atom is helium. B) the greater the difference in electronegativity between two bonded atoms, the more covalent the bond. C) atoms that have high electronegativity will readily accept an electron to form a negatively charged ion. D) within the periodic table, electronegativity increases in moving left to right and from top to bottom.