Atomic structure Flashcards

(8 cards)

1
Q

Define atomic number

A

The number of protons in an atom of an element.

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2
Q

Define isotope

A

Atoms of the same element having the same number of protons, but different numbers of neutrons.

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3
Q

Define relative atomic mass

A

The mass of a particle on a scale where an atom of carbon 12 has a mass of 12.

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4
Q

Describe atomic orbitals as?

A

The most probable regions in space where electrons have the specific energy corresponding to the orbital are found.

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5
Q

Describe the shape of s-orbitals as?

A

Spherical

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6
Q

Describe the shape of p-orbitals as?

A

Double teardrop shaped orbital

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7
Q

State Hund’s rule

A

No pairing in p orbitals before there is not at least one electron in each of them.

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8
Q

State Pauli’s exclusion principle

A

Maximum of two electrons per orbital provided that they spin in opposite directions.

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