Why is the atomic model useful? Why are atomic models necessary? How did Rutherford know that the nucleus was positively charged? What are cathode rays made of according to J. J. …

Rutherford did not expect anything from electrons before running the gold foil experiment. The conclusions concerning the effect of the electrons on alpha particles came after discovering …

We know that for a single electron system Bohr's atomic model is able to predict the binding energy levels quite accurately. As such using the formula for a nucleus with Z protons, the …

Nov 29, 2015 · It didn't prove anything; it provided good evidence against, and good evidence for a particular model of atomic structure. See here and elsewhere.

The Plum Pudding model stated that atoms are positive spheres with randomly placed negative Electrons. By defining the location of the positive and negative charges, this model was easily …

What is its atomic number, mass number, and electron configuration? What is atomic number? How is it used to distinguish one element from another? How many protons are in the nucleus …

The diameter of the nucleus would be 2.62 cm. 1. Calculate the diameter of the nucleus The radius r of a stable nucleus is roughly proportional to the cube root of the mass number (A ) of …

Big rip: This model says that dark energy will continue grow stronger with time and cause the expansion to accelerate. Such an event will cause large bodies like galaxies to recede from …

How does obesity contribute to varicose veins? How did Bohr use the atomic line spectrum of hydrogen to explain his model of the atom? How did the Meat Inspection Act protect …

What is the energy difference between the two quantum states involved in the transition of red light with wavelength 705 nm being absorbed by an atomic gas? What is quantum physics? …