Unit 4: Group 0, 1, 7 Flashcards
(23 cards)
What is a name for the group 0 elements?
Group 0 on the periodic table are the noble gases.
What are the group 0 elements?
Helium, neon, argon, krypton, xenon
What two things do group 0 elements have in common?
. They are all unreactive
. They are all gases
How do the boiling points in group 0 change?
The boiling points in group 0 increase down the group.
What element has the lowest boiling point in group 0?
Helium
how do boiling points change with atomic mass in group 0?
Boiling points increase as atomic mass increases.
How many electrons do group 0 elements have in their outer shell and what does this mean?
Group 0 elements have 8 electrons in their outer shell, so they have a stable configuration and are unreactive.
What is the name given to the elements in group 1?
Gorup 1 on the periodic table are the alkali metals
What are the three main alkali metals?
Lithium, sodium and potassium
How do alkali metals react with water?
Group 1 metals react vigorously with water and make hydrogen gas and an alkaline solution of the metal hydroxide.
how do group 1 metals react with oxygen?
Group 1 metals burn in oxygen to form oxides.
How does reactivity change down group 1 metals?
Reactivity increases down the group.
How many electrons do group 1 metals have in their outer shell and what does this mean?
All group 1 metals have 1 electron in their outer shell, making them highly reactive. They easily lose that electron to form a +1 ion.
What is the name given to the elements in group 7?
Group 7 on the periodic table are the halogens.
What are the elements in group 7?
Fluorine, chlorine, bromine, iodine, astatine
Are group 7 elements metal or non-metal?
The halogens are non-metal.
How many electrons do group 7 elements have on their outer shell?
The halogens all have 7 electrons in their outer shell, making them highly reactive.
What do group 7 elements produce when reacting with metals?
Halogens react vigorously with metals to produce salts.
What happens to the halogens boiling points and state as you go down the group?
As you go down the group, the halogens boiling points increase. They also change from gases to liquid to solids.
What are the physical states of the group 7 elements?
Gas = fluorine, chlorine
Liquid = bromine
Solid = iodine, astatine
What type of molecule are the halogens?
All halogens exist as diatomic molecules, meaning each molecule is made of two atoms.
How do the halogens share electrons?
They share one electron with another halogen atom, forming a covalent bond (a stable pair).
How do group 7 elements reactivity change down the group?
Halogens reactivity decreases down the group.
