I was on the phone to see if you wanted me a couple questions and I would be able answer questions on how
C. A high standard deviation means that the average distance from the data points to the mean is high, which is what C says.
The lines occurring in an emission spectrum are all electromagnetic waves, which means that their speed in a vacuum is
3 x 10⁸ m/s
We can use the equation,
v = fλ
which relates the velocity of a wave to the frequency and wavelength. Substituting values,
3 x 10⁸ = f * 434 x 10⁻⁹
f = 6.91 x 10¹⁴ Hz
The frequency of the wave will be 6.91 x 10¹⁴ oscillations per second.
Answer:
Energy level (n = 4), d subshell (l = 2)
Step-by-step explanation:
The number in 4d tells you the energy level of the subshell: n = 4.
The letter d gives you the secondary quantum number l.
Depending on its value, the letter gives you the shape of the orbital.
l = 0 corresponds to an s orbital (spherical)
l = 1 corresponds to a p orbital (dumb-bell shaped)
l = 2 corresponds to a d orbital (four four-leaf clovers + one that looks like a dumbbell with a doughnut around its middle)
The answer is D. To put it simply, all atom wished to become stable. The only way for that is to obtain an octet structure where the outermost shell would have 8 electrons, thus being full.
