Calculate the frequency of the light emitted by a hydrogen atom during a transition of its electron from the n = 3 to n = 1 energy level based on the bohr theory

Explanation:

The expression for the energy of an electron in the nth orbit is:-

For transitions:

Given,

 (negative sign indicates energy release)

Also,

Where,  

h is Plank's constant having value

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

the answer is 75.0%.