The three of them have the same amount of electrons, so we can’t determine the right one on that ground. As you might know, Pauli said that electrons are always in the position of the lowest energy. So the first situation is impossible because there is a free place available that takes less energy. Then the 3rd situation is nor possible because if one electron has a different spin than the others, there is a magnetic obstruction that be prevented if the spin changes. This means that the second situation is the right one.
Answer: Isotope A was measured at day 24, Isotope B was measured at day 6, and Isotope C was measured at day 10.
Explanation:
The half-life time is defined as the time needed for the radioactive isotope to decay to the half of its initial concentration.
- Isotope A: its starting weight 95 g and its ending measured weight is 5.9.
95 → 47.5 (half-life 1) → 23.75 (half-life 2) → 11.875 (half-life 3) → 5.9 (half-life 4).
It needs 4 half-lives to decay from 95 to 5.9.
half-life time of isotope A = 6 days.
the time taken to measure isotope A = (4 x 6 days) = 24 days.
- Isotope B: its starting weight 20 g and its ending measured weight is 2.5.
20 → 10 (half-life 1) → 5 (half-life 2) → 2.5 (half-life 3).
It needs 3 half-lives to decay from 20 to 2.5.
half-life time of isotope B = 2 days.
the time taken to measure isotope B = (3 x 2 days) = 6 days.
- Isotope C: its starting weight 45 g and its ending measured weight is 22.5.
45 → 22.5 (half-life 1)
It needs 1 half-life to decay from 45 to 22.5.
half-life time of isotope C = 10 days.
the time taken to measure isotope C = (1 x 10 days) = 10 days.
They are seen due to the light bouncing off of it. It is almost like a mirror so, it reflects the light so your eyes can see the bright light. Also, the colors are seen because of the light refracting. :)
~<em>Kayla :)</em>
Answer:
See attached picture.
Explanation:
Hello!
In this case, by considering that the carbon has four valence electrons as it is in group IVA, sulfur has six valence electrons as it is in group VIA and bromine has seven valence electrons as it is in group VIIA we infer that the carbon is the central atom in CSBr2 so one double bond between carbon and sulfur makes it complete the octet and two carbon-to-bromine bonds are formed in order to complete the octets of both carbon and bromine as shown on the attached picture.
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The area where she is flying in windless conditions along the equator is called doldrums. Doldrums is a windless zone at the equator caused by warm rising air. The zone experience bands of showers and storms due to the hot air that rises and cools.
