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Vadim26 [7]
3 years ago
11

Which of the following represent an atom from period 3?WILL MARK BRAINLIEST

Physics
1 answer:
irinina [24]3 years ago
3 0

Answer:

First one

It has 3 orbital

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A line from the Brackett series of hydrogen has a wavelength of 1945nm (or 1.0979x10^7m). From which state did the electron orig
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We use the Rydberg Equation for this which is expressed as:

<span>1/ lambda = R [ 1/(n2)^2 - 1/(n1)^2]
</span>
where lambda is the wavelength, where n represents the final and initial states. Brackett series means that the initial orbit that electron was there is 4 and R is equal to 1.0979x10^7m<span>. Thus,
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1/ lambda = R [ 1/(n2)^2 - 1/(n1)^2]
1/1.0979x10^7m = 1.0979x10^7m [ 1/(n2)^2 - 1/(4)^2]

Solving for n2, we obtain n=1.
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7 0
3 years ago
Read 2 more answers
(answer fast and correctly and i will give you brainiest and 5 star's. )
oee [108]

Answer:

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7 0
2 years ago
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