Which of the following experimental observations proved that the idea of matter and mass being evenly distributed in an atom was
flawed? A. Less than 1% of the alpha particles went un-deflected through the gold foil. B. Less than 1% of the alpha particles were deflected by angles greater than 90°. C. The beam from the negative electrode was deflected by electrically charged rods. D. The beam from the negative electrode cast a shadow on the positive electrode.
B. Less than 1% of the alpha particles were deflected by angles greater than 90°.
Explanation:
In Rutherford’s gold foil experiment most of the alpha particles pass undeflected which proved that most of the atom is empty. Less than 1% of the alpha particles were deflected by angles greater than 90°. This proved that the entire mass of the atom is confined to a small space which is highly dense.
In first shell only 2 electrons are present in hydrogen only one electron is present in valence shell. To complete its duplet hydrogen can share lose or gain only one electron to form chemical bond.
Here, we should use combined gas law which can be derived from combined gas law, “PV=nRT”. Rearranging, we can get PV/T=nR. Then we can set the two states in the problem together to get
A molecular compound is usually composed of two or more nonmetal elements. Molecular compounds are named with the first element first and then the second element by using the stem of the element name plus the suffix -ide.
