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Periodic trends in Group 1 and 7 elements - Coggle Diagram
Periodic trends in Group 1 and 7 elements
Group 1
The atoms get bigger as we go down the group
the force of attraction between the nucleus and the outer electron decreases as we go down.
Number of valence electrons are 1
Reactivity and metallicity increases as we go down
the outermost electron is lost more easily
Low melting points
Low density
Atomic radius increases as we go down
Group 7
The atoms get bigger as we go down the group
the force of attraction between the nucleus and the outer electron decreases as we go down.
Number of valence electrons are 7
Reactivity and metallicity decreases as we go down
The electrons in the outermost shell are not lost easily
high melting points
Intramolecular forces get stronger.
Atomic radius increases as we go down
2 halogen atoms are bonded with a single covalent bond
Cannot be cut because all in gaseous state
high boiling points.