Answer:
Explanation:
remember that the phosphorous formula is P4
n P4 = mass / M.wt
825 / 4x 30.97 =
= 6.660 mole
fourth period
The third period is similar to the second, except the 3s and 3p sublevels are being filled. Because the 3d sublevel does not fill until after the 4s sublevel, the fourth period contains 18 elements, due to the 10 additional electrons that can be accommodated by the 3d orbitals.
This is diffusion which is the movekemt of particles from a region of high concentration to a region of low concentration until it is evenly distributed.
Frequency = speed of light
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wavelength
= 3 x 10^8
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344 x 10^-9
= 8.72 x 10^14 Hz.
Hope this helps!
