Of elements in the same group, those at the bottom of the periodic table have low ionization energies because
A. these elements are high in electronegativity
B. they have fewer electron shells to shield the protons from the
electrons
C. their atomic radius is large
DD. layers of electron shells shield the protons' attractive force

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?

The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.

Building glycogen from glucose molecules is an example of