Name: Energy to Take Electrons Out: Ionisation Enthalpy
Uploaded: 2019-07-19
Duration: 3 min 6 s
Description: Ionisation enthalpy of an element can be the amount of energy required to remove an electron from an isolated gaseous atom. What does this mean? Learn about...

Question

Give the three types of orbital present in the third principal quantum number.

Accepted Answer

The three orbitals which are present in the third principal quantum number is as follows:

Principal quantum number $(n) = 3$

Azimuthal quantum number $(l)$ value ranges from $(0 to n - 1)$ . Therefore, $l = 0, 1, 2 .$

Azimuthal quantum number (l) Subshell

$l = 0$ $s$

$l = 1$ $p$

$l = 2$ $d$

Magnetic quantum number (m) value ranges form (-l to +l), It tells us about the number of orbitals present in a Subshell.

Magnetic quantum number (m) Number of orbitals

$l = 0$ $1$

$l = 1; (- 1, 0, + 1)$ $3$

$l = 2; (- 2, - 1, 0, + 1, + 2)$ $5$

Therefore, the third principal quantum number contains $1 + 3 + 5 = 9$ orbitals.
i.e; The three orbitals are as follows:
$3 s$
$3 p; (3 p_{x}, 3 p_{y}, 3 p_{z})$
$3 d; (3 d_{xy}, 3 d_{yz}, 3 d_{xz}, 3 d_{x^{2} - y^{2}}, 3 d_{z^{2}})$

Lawrie Ryan and Roger Norris Solutions for Chapter: Electrons in Atoms, Exercise 7: Question

Lawrie Ryan Chemistry Solutions for Exercise - Lawrie Ryan and Roger Norris Solutions for Chapter: Electrons in Atoms, Exercise 7: Question

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