In what sense are photons quantized? A. Each photon emits more energy than its absorbs
B. Each photon can have multiple frequencies
C. Each photon travels exactly at the same speed of light
D. Each photon has a specific amount of energy​

D. Each photon has a specific amount of energy​

Explanation:

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.