Report Abuse. You are self employed or independent contractor. You must file your tax return if your self employed income is $400 or more. You will report your income and expenses on schedule C or C-EZ (Form 1040). Then you put net income (or loss) on line 12 of Form 1040.eport Abuse. You are self employed or independent contractor. You must file your tax return if your self employed income is $400 or more. You will report your income and expenses on schedule C or C-EZ (Form 1040). Then you put net income (or loss) on line 12 of Form 1040.
Key points. 1  Bohr's model of hydrogen is based on the nonclassical assumption that electrons travel in specific shells, or orbits, around the nucleus. 2  Bohr's model calculated the following energies for an electron in the shell, nnnn:
In 1913 Bohr proposed his quantized shell model of the atom to explain how electrons can have stable orbits around the nucleus.ecause of the quantization, the electron orbits have fixed sizes and energies. The orbits are labeled by an integer, the quantum number n. With his model, Bohr explained how electrons could jump from one orbit to another only by emitting or absorbing energy in fixed quanta.