Periodicity Flashcards

1
Q

Atomic radius trend

A

Atomic radius decreases across a period. This is because positive charge increases across a period due to the increasing proton number and this means the electrons are attracted closer to the nucleus, making the atomic radius smaller

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2
Q

Element classification

A

An element is classified as s, p, d or f block according to its position in the periodic table

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3
Q

Ionisation energy trend

A

Ionisation energy generally increases across a period due to the increasing positive charge in the nucleus attracting the outer shell electrons more strongly

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4
Q

Periodicity

A

Trends in element properties with increasing atomic number. The trends are caused by the changes in element atomic structure

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5
Q

Proton number

A

The number of protons found in the nucleus of every atom of that element. Elements are arranged in the periodic table in order of increasing proton number

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