Atomic Structure And The Periodic Table

Question 0

Pauli Exclusion Principle

Answer 0

Within an atom, no two electrons can have the same set of quantum numbers. So, each electron has its own distinct set of four quantum numbers.

Question 1

Aufbau principle

Answer 1

When building up the electron configuration of an atom, electrons are placed in orbitals, subshells, and shells in order of increasing energy

Question 2

Hund’s Rule

Answer 2

When an electron is added to a subshell, it will always occupy an empty orbital if one is available. Electrons always occupy orbitals singly of possible and pair up only if no empty orbitals are available.

Question 3

Diamagnetism

Answer 3

A type of magnetism in which elements have all of their electrons spin paired( all subshells completed)

Question 4

Paramagnetism

Answer 4

Elements that do not have all of their electrons spin paired; elements with not all subshells completed

Question 5

Quantum numbers

Answer 5

The positions of the electrons in relation to the nucleus

Four quantum numbers: shell, subshell, orbital, spin

Question 6

Four quantum numbers

Answer 6

Shell (principle quantum number n)
Subshell (angular momentum quantum number l)
Orbital (magnetic quantum number ml)
Spin (ms)

Question 7

Quantized energy of an electron formula

Answer 7

En = (-2.178x10^-18)/n^2 joules

n = principal quantum number of the electron