Atomic Structure And The Periodic Table Flashcards

(8 cards)

0
Q

Pauli Exclusion Principle

A

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.

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1
Q

Aufbau principle

A

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

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2
Q

Hund’s Rule

A

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.

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3
Q

Diamagnetism

A

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

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4
Q

Paramagnetism

A

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

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5
Q

Quantum numbers

A

The positions of the electrons in relation to the nucleus

Four quantum numbers: shell, subshell, orbital, spin

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6
Q

Four quantum numbers

A

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

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7
Q

Quantized energy of an electron formula

A

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

n = principal quantum number of the electron

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