How many electrons in the same atom can share the quantum number n = 2?. . A. 2 B.6 C.8 D.10

1 answer:

3 0

The number of electrons when the quantum number n=2 is 8 electrons. Variable n represents the principal quantum number which is the number of the energy level.

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An electron in the n=6 level of the hydrogen atom relaxes to a lower energy level, emitting light of ?=93.8nm. find the principa

Rama09 [41]

We can find the principal level or lower level using Rydberg's formula:

1/w = R(1/L² - 1/U²)

where:

w is the wavelength (93.8 nm),

L is the lower energy level (unknown)

U the upper energy level (n= 6)

R is Rydberg's constant (10,967,758 waves per meter)

Substituing known values into the equation:
1/(9.38 * 10^-8 m.) = 10,967,758(1/L² - 1-36)

Using the solver function of the calculator to get for L:

L = 0.999 
so L = 1.
The lower level is 1 (the ground state).

3 0

4 years ago

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What is true of a sulfide ion (S2-)?

ratelena [41]

Answer: D) It has two more electrons than protons.

Explanation: Sulphur (S) is an element with atomic number 16 and thus contains 16 electrons. A neutral atom contains equal number of protons and electrons.

$S:16:[Ne]3s^23p^4$