Based on the quantum model, which of the following correctly compares the location of the subatomic particles?
a. particle a moves in specific orbits and particle b moves randomly.
b. particle a is present in 3d orbitals and particle b is packed in the nucleus.
c. particle a moves randomly and particle b is tightly packed in the nucleus.
d. particle a is tightly packed in the nucleus and particle b moves in specific orbits.

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.

that tool would be a compass

the answer to this question is 3.

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).