Groups
The noble gases
What element has the highest electronegativity?
Florene (4.0)
Which has a higher melting point, the noble gases or the Boron Group?
The Boron Group
A ________ is another name for a row on the periodic table.
Period
This family consists of ALL gases.
The Noble Gases
What is the name of group 17 on the periodic table?
What element has the lowest electronegativity?
Francium (0.8)
Which of these elements has the highest melting point?
a) Tungsten
b) Hydrogen
c) Helium
d) Magnesium
a) Tungsten
A _______ is another name for a column on the periodic table.
Group
What family is Hydrogen in?
A family all alone.
What is the most reactive group on the periodic table?
The alkali metals
Why do the noble gases not have electronegativity?
They have full valence shells.
What is the trend in melting and boiling point as you move across a period on the periodic table?
An increase in melting and boiling temperature until you reach the metalloids, followed by a sharp drop.
Which of the following has the largest atomic radius?
a) Calcium
b) Iron
c) Nickel
d) Krypton
a) Calcium
Define: Atomic Radius
The radius from the nucleus to the valence electrons.
Which group is inert?
The Noble Gases
Describe the patterns of electronegativity on the periodic table. (i.e. what happens as you move across a period or down a group)
Electronegativity increases moving from left to right across the periodic table and decrease from top to bottom.
Which elements have the highest melting point?
Metalloids
Which of the following elements has four electron orbitals?
a) Germanium
b) Tin
c) Lead
d) Chlorine
a) Germanium
What happens to electronegativity as you move down a group on the periodic table?
Electronegativity decreases as you move down a group on the periodic table.
Which of the following groups has the highest melting point?
a) Alkali metals
b) Alkaline earth metals
c) Boron group
d) Halogens
c) Boron group
Define electronegativity.
The tendency of an atom to gain or lose an electron.
Define melting point.
The temperature at which a solid turns into a liquid
What causes the trend in atomic radius within each period?
An increase in positive charge in the nucleus pulls the electrons closer.
Why does electronegativity show the trend that it does as you move down the periodic table?
The valence electrons are moving further away from the nucleus.