What is the (a) frequency and (b) wavelength (in nm) of a source of purple light at the edge of the visible light spectrum?

a)

b)

Explanation: Visible light is a form of electromagnetic wave.

Wavelength is defined as the distance between two successive crests of a wave. It is represented as symbol .

Frequency is defined as the number of complete cycles happening per second. It is represented by the symbol .

Wavelength and Frequency follow inverse relation,

where, c = speed of light =

Wavelength and frequency of a wave is usually expressed in a range.

a)  

b)

we need the questions , i may then you.

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.

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