Тема: Spin (physics) - Wikipedia

I know how to calculate them and such stuff, but I wanted to know what they actually signify. I have a vague idea that they have something to do with an electron's position in an atom but what do all of them mean? Any help would be greatly appreciated!

Principle quantum number ($n$) - indicates the orbital size. Electrons in atoms reside in atomic orbitals. These are referred to as $s,p,d,f.$ type orbitals. A $1s$ orbital is smaller than a $2s$ orbital. A $2p$ orbital is smaller than a $3p$ orbital. This is because orbitals with a larger $n$ value are getting larger due to the fact that they are further away from the nucleus. The principle quantum number is an integer value where $n$ = 1,2,3..

Click here assigning quantum numbers

I know how to calculate them and such stuff, but I wanted to know what they actually signify. I have a vague idea that they have something to do with an electron''s position in an atom but what do all of them mean? Any help would be greatly appreciated!

Principle quantum number ($n$) - indicates the orbital size. Electrons in atoms reside in atomic orbitals. These are referred to as $s,p,d,f.$ type orbitals. A $1s$ orbital is smaller than a $2s$ orbital. A $2p$ orbital is smaller than a $3p$ orbital. This is because orbitals with a larger $n$ value are getting larger due to the fact that they are further away from the nucleus. The principle quantum number is an integer value where $n$ = 1,2,3..

3

4

1s2 2s2 2p3= the element is nitrogen, right? The atomic number of nitrogen is 7 since odd numbers = 1/2 and even numbers = -1/2 the answer is 1/2 ^^~

The four quantum numbers are n, l, m_l, s. For a 3s electron in a Mg atom with "spin up" configuration: n = 3 l = 0 m_l = 0 s = 1/2 For a 3s electron in a Mg atom with "spin down" configuration: n=3 l=0 m_l = 0 s=-1/2

Assigning Symmetries of Vibrational Modes C. David Sherrill School of Chemistry and Biochemistry Georgia Institute of Technology June 2000; Revised July 2010

answer is (d)