Answer:
a) Mg
b) Cl
c) Mn
d) Ne
Explanation:
This electron configuration for the atom in its excited state violates the Aufbau principle or rule like we have above.
Aufbau principle states "that in the ground state of an atom or ion, electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels."
We however can know and identify which element is in the excited state by knowing the sum of the electron that spread across the orbital and matching it up with the atomic number of the element in the periodic table.
This is because of the increasing number of protons in the nucleus, resulting in a stronger attraction of the electrons with the nucleus.
Answer:
The hot water was better for removing the oil.
Explanation:
You can see that because the mass went down more with the hot water. So, that means that more oil was taken out of the feather with hot water.
Just use a solubility chart! Find the cation on the far left and the anion on the top and find where they connect. If it says "s," it is not soluble. If it says "aq," it is soluble. Here, ZnF (Zinc Fluoride) is soluble. Hope that helps! :)
P.S. Not all of the compounds above are on this particular chart. In future problems, just google "solubility chart" until you find one with all of the compounds you need to look at.
In his pamphlet Common Sense, Thomas Paine urged American colonists to establish their own nation. The correct option among all the options that are given in the question is option "1". The pamphlet by Thomas Paine actually urged the colonists to denounce the British rule. He was of the opinion that it was not fair that an island would rule over a total continent.<span>He also wrote that being a part of Britain would
unnecessarily drag America into unwanted wars with European countries.</span>
