The method that can be used to separate the mixture is DISTILLATION.
Distillation is a separating technique that is used to separate mixture of liquids which have boiling points that are far apart. The mixture will be heated, the liquid with the lowest boiling point will boil over and can be collected over a condenser, thus separating the two liquids.
The most likely problem that Jeanine is having with performing her experiments is an ethical limitation.
<h3>What is an ethical limitation?</h3>
An ethical limitation is a type of mental constraint that one person may impose on her/himself according to his/her ethical values.
Experimental procedures in science may raise ethical limitations according to the field of study.
In conclusion, the most likely problem that Jeanine is having with performing her experiments is an ethical limitation.
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Neon and helium both have full valence shells. This means that the out-most electron shell of the atom is full. In neon, the valence shell is 8 electrons, represented by the number of atoms in the family. In helium, the valence shell is only 2 electrons, which is what it has.
All given elements belong to second period of periodic table. And we know that going from left to right along the period the number of shells (Principle Quantum Number) remains constant and the number of protons (atomic number) increases, due to this increase in nuclear charge the valence electrons are more attracted towards the nucleus resulting in decreasing the atomic radii, Hence, the atomic radii from larger to smaller radii are as ,
Li Be B C N Ne
Largest --------------------------------> Smallest
<span>C) The number of neutrons present in the nucleus of each atom is 126 </span>