Groups of periodic table Flashcards
(4 cards)
1
Q
What are Group 1 elements?
A
Alkali metals – lose 1 electron to form 1+ ions, react with water to make alkali.
2
Q
How does reactivity change in Group 1?
A
Increases down the group as outer electron is lost more easily.
3
Q
What are Group 7 elements?
A
Halogens – gain 1 electron to form 1- ions, reactivity decreases down the group.
4
Q
What are Group 0 elements?
A
Noble gases – full outer shell, very unreactive.
