chemistry icse class 10 periodic table

atomic radius

it is the distance between the centre of the nucleus and the outer most shell of the atom

Ionisation potential

amount of energy required to remove an electron from the outermost shell of an isolated gaseous atom

electron affinity

it is the amount of energy released when an atom in the gaseous state accepts an electron to form an anion

Electronegativity

the tendency of an atom to attract a electrons to itself when combined in a compound

trend - atomic size - across a period

decreases

trend - I.P - across a period

increase

trend - electron affinity - across a period

increases

Trend in electronegativity across a period

increases

Trend of metallic character- across a period

decreases

trend of atomic size down a group

increases

Trend in ionisation energy down a group

decreases

trend of electron affinity down a group

decreases

trend of electronegativity down a group

decreases

Trend of metallic character down a group

increases

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