the halogens Flashcards
(16 cards)
what are elements in group 7 called?
halogens
how many electrons do halogen have in their outer shell?
- 7 electrons
are halogens metals or non metals
non-metals
what kind of molecules are halogen?
diatomic: molecules made up of two atoms chemically bonded together
diatomic molecules:
diatomic molecules are molecules made of two atoms chemically bonded together
what happens to boiling and melting point as you go further down the group 7 in the periodic table?
- higher melting and boiling point because
1- molecules become larger
2- forces between molecules become stronger
3- more energy to overcome these factors
are halogen stable?
no because they need one electron to have a stable electronic configuration
what are halogens?
A halogen is a chemical element that forms a salt when it reacts with metal
what is the color of chlorine?
pale green
what is the color of bromide?
brown/orange
color of iodine
black/ purple
what is the state of chlorine at room temperature?
gas
what is the state of bromide at room temperature?
liquid
what is the state of iodine at room temperature?
solid
as you go down the halogens what happens to the reactivity?
decrease in reactivity
