Unit cells.
They are the smallest group of atoms that take form of a crystal and can repeat in 3 dimensions.
It depends ..........................................
hahah i also needed this answer for ms mackos packet
also can you make me brainliest so that i get more points
Answer: It shows that the object is supposedly moving toward the observer
Explanation: A spectrum typically displays intensity and wavelength which characterises light.
Answer:
The net energy is 2.196 eV
Explanation:
Basically, the energy of an atom increases when it absorbs a photon. In addition, the wavelength of the emitted photon is longer such that the atom absorbed a net energy in the process.
Using:
ΔE = h*c*(1/λ - 1/λ)
where:
ΔE is the net energy in eV (electron-volt). 1 eV is equivalent to 1.602* J.
h = 4.135* eVs
c = 3* m/s
λ = 300 nm = 300* m
λ = 640 nm = 640* m
Thus:
ΔE = 4.135* eVs*3* m/s*()
ΔE = 4.135**3**1.77* eV = 2.196 eV