Atomic Radii
Atomic Radii is referring to the ______ of the atom.
size OR volume
( smaller / larger ) atoms have the greatest ionization energy.
smaller
Atoms get larger as you move down the periodic table. Why?
more energy levels
Opposite charges (attract / repel).
attract
Elements have greater reactivity if they react ( slower / faster ) with other substances.
faster
A you move down the periodic table, the atoms get ( smaller / larger )
larger
( smaller / larger ) atoms have the lowest ionization energy
larger
Atoms get smaller as you move from left to right across the periodic table. Why?
same number of energy levels
more protons (greater nuclear charge) attracting those electron in those energy levels
2 negative charges will (attract / repel)
repel
2 Metals create sparks when added to water. The one that creates bigger sparks is thought to be ( less / more ) reactive.
more
As you move from left to right across the periodic table, the atoms get ( smaller / larger )
smaller
What is Ionization Energy?
The energy needed to remove one valence electron
Reactivity of metals decreases as you move from left to right across the periodic table. Why?
Metals react when they lose electrons
Same number of energy levels
more protons (nuclear charge) ... creating greater attraction to electrons, requiring more energy for the electron to be removed.
A valence electron is more attracted to a nucleus with (fewer / more) protons than one with (fewer / more) protons.
more, fewer
Metals with a ( lower / greater ) ionization energy have greater reactivity.
lower
Which is larger? Ar or Ne?
Which has a greater ionization energy? Ca or Mg?
Mg
Reactivity of metals increases as you move down the periodic table. Why?
Metals react when they lose electrons
more energy levels ... valence electrons are further away from nucleus, decreasing their attraction to the nucleus, requiring less energy for the electron to be removed.
A valence electron is (less / more) attracted to a nucleus when there are more core electrons, due to a process called ________.
less, shielding
Na is ( less / more )reactive than K in water.
Ca is ( less / more ) reactive than K in water.
less, less
Which is larger? S or Cl?
S
Which has a greater ionization energy? Li or Be?
Reactivity of nonmetals decreases as you move down the periodic table. Why? (Extra Credit)
Nonmetals react when they gain electrons
more energy levels ... valence electrons are further away from nucleus, decreasing their attraction to the nucleus, making it less likely for a far away electron to be gained by the atom.
Electrons are less attracted to a nucleus when they are ( closer together / further away)
further away
F is ( less / more ) reactive than Cl.
S is ( less / more ) reactive than Cl.
more, less