mass number is the number of protons and neutrons in the nucleus of an isotope . how many protons in an oxygen-18 atom ?
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The wavelength of light : 4.14 x 10⁻⁵ m
<h3>Further explanation </h3>Radiation energy is absorbed by photons
The energy in one photon can be formulated as
Where
h = Planck's constant (6,626.10⁻³⁴ Js)
f = Frequency of electromagnetic waves
The energy of the light = 4.8 x 10⁻²¹ J
The wavelength of light :