Among ²⁸₁₂Mg ²⁴₁₂Mg, <u>²⁴₁₂Mg</u> is more stable.
<h3>Briefly explained</h3>
We can identify which isotope in the pair is more stable. Let's review the criteria that are used to determine a stable isotope. A stable isotope will have more neutrons than protons with a neutron to proton ratio somewhere between one and 1.52 On the high atomic number, we're up to 152 at low atomic numbers were closer to one.
More stable isotopes have an even number of protons and neutrons. And stable isotopes have their proton or neutron number equal to one of these magic numbers.
We have ²⁸₁₂Mg with 16 neutrons and 12 protons with the neutron to proton ratio of 1.33. And we compare that to ²⁴₁₂Mg With 12 neutrons and 12 protons and the neutrons to protons ratio of one. So we do have a relatively small Z value. So the new trying to approach on ratio should be close to one. Wherefore ²⁸₁₂Mg , although both of these are even we do have a pretty high neutron to proton ratio for a low atomic number.
So ²⁸₁₂Mg is likely less stable While²⁴₁₂Mg is more stable.
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Answer:
option . D
Increase in temperature
is an indicator of a chemical reaction
hope it helps
Physiological pH is between 7.37 and 7.43
Lysine is a basic amino acid, which means
it has two NH2 groups and one COOH group.
Lysine pKas are: 2.16, 9.06 and 10.05
At low pH (lower than the first pKa, in
this case: lower than 2.16) the three groups are protoned. As you increase pH,
the first group to lose its proton is the acid group, then the alpha-amino
group and then the R-amino group. You will have everything non protoned at a
high pH (higher than the highest pKa, in this case: 10.05).
Physiological pH is higher than the lowest
pKa and lower than the middle pKa, so it’s the second case: the acid is
not protoned, the R-amino is protoned and the alpha amino is protoned.
Protoned aminos are cations: NH3+.
Mercator and conic projections are different because conic projections have a cone/triangle shape and Mercator projections have a cylindrical look to them. They are both the same because they show the world. However, the world is viewed from very different perspectives. For example, a Mercator projection is from the point of view of a bird and the conic is from a view from space.
