Which of the following statements correctly compares the relative size of an ion to its neutral atom? athe radius of an anion is greater than the radius of its neutral atom. b the radius of a cation is greater than the radius of its neutral atom. cthe radius of an anion is identical to the radius of its neutral atom. d the radius of a cation is identical to the radius of its neutral atom.

The radius of an anion is greater than the radius of its neutral atom. Because anion is a species which is formed when an electron is added to an atom so it becomes negatively charged. When the number of electrons increases in an atom so its atomic size becomes greater and therefore its radius becomes great. The radius of an anion is greater than neutral as it accepts the electrons from others to become stable.

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.