Question

Write the values of all four quantum for 2p electrons . Disscus their significance in brief.​

Answer 1

Answer: There are 4 quantum numbers :

1. Principle Quantum Numbers: This quantum number describes the size of the orbital. It is represented by n.

For 2p, the value of n=2.

2. Azimuthal Quantum Number: This quantum number describes the shape of the orbital. It is represented as 'l'. The value of l ranges from 0 to (n-1). For l = 0,1,2,3... the orbitals are s, p, d, f...

For 2p , the value of l=1 for p orbital

3. Magnetic Quantum Number: This quantum number describes the orientation of the orbitals. It is represented as $m_l$. The value of this quantum number ranges from $(-l\text{ to }+l)$. When l = 2, the value of $m_l$ will be -2, -1, 0, +1, +2.

For 2p, with l=1 , values of $m_l$ will be -1, 0, +1 which are designated as $p_x$,  $p_y$ and  $p_z$

4. Spin Quantum number: This quantum number describes the direction of electron spin. This is represented as $m_s$ The value of this is $+\frac{1}{2}$ for upward spin and $-\frac{1}{2}$ for downward spin.