Compared to ultraviolet light, an electromagnetic wave that has a higher frequency will also have

High energy and Low wavelength.

Explanation: We are given an electromagnetic wave having high energy, so by using Planck's equation:

where, E = energy

h = Planck's constant

= frequency

here, Energy and frequency follow direct relation and hence high frequency means high energy.

and

= Frequency

c = speed of light

= wavelength

Here, the frequency is inversely related to the wavelength, hence high frequency means low frequency.

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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~ trueboss72