B) less
As if the atom has more electrons than protons it is negatively charged
The answer would be 7 because of this solution:
You divide (1|2) and then divide it by 7.
The answer should be 0.78% of the remaining half-lives after 7. Because of the remaining radioactive substance that happens during that 0.78 percentage.
Antoine Lavoisier was part of a wealthy family in Paris. He pursued to study science upon realizing that chemistry or the study of the elements was not a well-studied field. His discovery of that air was a mixture of nitrogen and oxygen gave rise to the concept of COMBUSTION after repeating the experiments made by Priestly using mercury and other metal oxides.
The event was such a history-making because it disproved that concept that air was a pure substance along with 3 others: earth, fire, and water.
Answer:
From longest to shortest range: Charge-charge interaction ⇒Dipole-dipole interaction ⇒ Dipole- induced dipole interaction ⇒ Van der Waals interaction (dispersion force).
Explanation:
There are different types of intermolecular forces, between them:
1) Charge-charge interaction are electrostactic interaction between charged particles or molecules. This type of interaction is very strong and can extend over greater distances than other kinds of interactions.
2) Dipole-Dipole interactions take place between polar molecules, it means molecules that have partial positive and negative charges and they aproximate each other because of this positive and negative poles.
3) Dipole-induced dipole interaction happens when a polar molecule or ion aproximates to a non-polar molecule. As a result partial charges (positives and negatives) appear in the non-polar molecule. The distance between the polar and non-polar molecule to cause the induced dipole needs to be short.
4) Van der Waals interaction (dispersion force) appear as a result of temporal dipoles. This type of interaction is relatively weak. The distance between induced dipoles is short.
>Electrons move in circular orbits around the nucleus. Electrons are held in an atom by their attraction to each other. Electrons are evenly distributed throughout a mixture of positive and neutral particles.<