Answer:
The wavelength and frequency of light are closely related. The higher the frequency, the shorter the wavelength. Because all light waves move through a vacuum at the same speed, the number of wave crests passing by a given point in one second depends on the wavelength
Explanation:
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None. Ammonium has no <span>π bonds at all so it can't have any resonance. </span>
Idk bro what if it was like not per cubic centimeter
Answer:
Ans) True , the electron of cation gets excited to higher energy level by absorbing energy and being unstable at excited state returns to the ground state by emitting energy whose wavelength happens to lie in visible region hence they show colour.
Explanation:
True , Different colours have different wavelength , In VIBGYOR , on going from violet to red the wavelength increases.
False, only those show colour whose emission wavelength of radiation lie in visible region.
True, some metal cations will emit colour that are observable
True, anion also contributes to the colour of salt in flame test. A given metal with different anion may give show different colours.
Answer: an addition reaction is one where two molecules react together to produce one. in this case a bromine molecule reacts with ethene and one of the bromine atoms is added to ethene
Explanation:
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