Answer:
Absorbs energy
Explanation:
As an electron in an atom moves from the ground state to the excited state, the electron absorbs energy.
Electrons moves around in permissible orbits around the nucleus of an atom.
- An electron in a certain energy level has a definite amount of energy associated with it at that level.
- When an electron in ground state absorbs energy, it moves to a higher energy level.
- When an electron in excited state loses energy, it moves to a lower energy level.
The transition of electrons from one level to another involves loss or gain of energy.
Valence electron/s - it's electron/s located in outer shell of an atom.
Fluorin have 7 valence electrons located in 2 shell.
2s² 2p⁵
The relationship between energy and wavelength is shown by:
E = hc/wavelength
As we can see, there is an inverse relation between energy and the wavelength. The greater the energy, the shorter the wavelength. Among the mechanical waves listed, at the wavelength of 7 cm.
.86km is the correct answer