An electron shell can hold 2(n^2) electrons (technically) where n is the shell number, i.e. shell 1 can hold 2, shell 2 can hold 8, 3 holds 18 and so on.
The atomic number of Nitrogen is 7, i.e. it has 7 electrons (to match its 7 protons, assuming it isn't an ion).
With the atomic number, you simply start from shell 1 and work out. So we put 2 electrons in shell 1, leaving us with 5 left. Shell 2 can hold 6 so we can fit all 5 in.
In other words, you should have 2 electron shells on the atom, shell 1 with 2 e- and shell 2 with 5 e-.
Answer:
True
Explanation:

As one drive away from the radio station, the recession velocity increases and causes the apparent wavelength to increase accordingly, which in turn causes the True wavelength received from the radio station to increase as well because of their direct relationship as shown in the equation above.
Answer:
Explanation:Abiotic is the answer.
Answer:
187.37 m
Explanation:
The wavelength of an electromagnetic wave is given by:

where
c is the speed of light
f is the frequency
We see that the wavelength is inversely proportional to the frequency: this means that the shortest am wavelength will occur at the highest am frequency, which is

And substituting also the speed of light

We find the wavelength:

Answer:
a)It is NOT possible using this telescope, to see the two stars as separate stars
b)
Explanation:
From the question we are told that:
Diameter of lens,
Distance from both star
Distance between both stars
Wavelength of light
Generally the equation for angle subtended by the two stars at the lens is mathematically given by



Generally the equation for minimum angular separation of two object is mathematically given by

Therefore


It is NOT possible using this telescope, to see the two stars as separate stars
b)
Generally the equation for minimum diameter of the lens is mathematically given by


