Ionization Energy
The energy required to remove a valence electron.
what is ionization energy?
What is atomic radius?
It is half the distance between two adjacent nuclei of atoms of the same element.
What does electronegativity tell us about?
Electronegativity tells us how strongly an atom holds onto/attracts electrons to itself.
Good conductor of electricity and shiny.
Give an example.
Metal.
Anything to the left of the staircase is a metal.
Name for elements in Group 1 on periodic table.
Alkali metals
How many valence electrons are in calcium?
2
Decreases from top to bottom in a group AND increases from left to right in a period.
What is the periodic trend of Ionization energy
Increases from top to bottom in a group, decreases from left to right in a period.
What is the periodic trend in atomic radius?
What are the general characteristics of metalloids?
Share properties of both metals and nonmetals
Name for elements in group 2 on the periodic table.
Alkaline Earth metals
What charge ion is formed by bromine?
-1
If it's easy to remove an electron.
What is low ionization energy
How many energy levels does gallium have?
4
Order the following elements in increasing electronegativity:
C, Si, Ge, Sn, and Pb.
Pb<Sn<Ge<Si<C
Poor conductors of electricity and not shiny, not malleable, not ductile.
Nonmetals.
What is the name for the group of elements in Group18 of the Periodic Table?
Noble Gases.
Unreactive
Magnesium will form this ion during chemical bonding
+2
This causes increasing ionization energy going left to right across a period of elements.
What is nuclear charge increases without adding energy levels which increases the attraction for electrons?
The larger element between Ca and Ba
Ba
This is the order from least to most electronegative.
a) F, Cl, Ge, Sn
b) Rb, Ca, Sc, Cs
c) Zr, V, Nb, Ta
d) Sn, As, P, S
e) Li, Na, K, F
What is d) Sn, As, P, S
Give an example of a metalloid
Boron, silicon, germanium, arsenic, antimony, tellurium, polonium
These elements are extremely toxic and have 7 valence electrons.
Halogens.
how many valence electrons does nitrogen gain or lose for an octet?
3
This causes decreasing ionization energy going down a group of elements.
What is energy levels are added which increases the distance between the valence electrons and the nuclear pull.
The smaller element between N and F
What is F?
It decreases from top to bottom within a group and increases left to right across a period.
What is the periodic trends in electronegativity.
What's the difference between a group and a period? What information can we get from them?
Groups are the vertical columns on the periodic table, periods are the horizontal rows.
Groups tell us the number of valence electrons, periods tell us how many energy levels are used to arrange the electrons.
Why are noble gases chemically stable?
They have an octet.
________________ elements gain electrons and ________________ elements lose electrons to complete their valence shell of electrons
nonmetals
metals