WorksheetsPeriodic Trends CLC
Total questions: 15
Worksheet time: 18mins
Which of the following elements has the largest atomic radius? HINT: Radius means size
Mn
Ga
Ca
Br
Which of the following elements has the lowest ionization energy? HINT: larger the atom, lower the energy
Be
Mg
Ca
Ba
Which of the following has the highest electronegativity?
Hint: Electronegativity stops at group 7.
O
C
N
Ne
Which element is most reactive?
He
Cl
Br
Xe (noble gas)
Is Silicon (atomic # 14) bigger or smaller than Argon (atomic #18)?
bigger
smaller
same size
neither
Which element would have the highest ionization energy?
HINT: ionization wants to remove electrons. Who will never want to give up their electrons?
Argon
Lithium
Chlorine
Sodium
Why does atomic radius increase top to bottom in a group?
Zeff (nuclear pull) is greater. More protons pull the atom closer together
Zeff (nuclear pull) is less. More energy levels are added and the nucleus can't hold on.
Electrons are being lost
Protons are being lost
Why does ionization energy increase left to right in a period (row)?
Zeff (nuclear pull) is greater. More protons pull the atom closer together
Zeff (nuclear pull) is less. More energy levels are added and the nucleus can't hold on.
Electrons are being lost
Protons are being lost
Ionization energy is different from electronegativity because
Ionization energy is removing valence electrons and electronegativity attracts electrons.
Ionization energy attracts electrons and electronegativity removes valence electrons.
Electronegativity is the size of an atom
Ionization energy is the size of an atom
When Barium (Ba) is compared to Calcium (Ca):
Barium isn't in the same group as Calcium
Barium is bigger than Calcium in size
Barium is more electronegative than Calcium
Calcium is bigger than Barium
Which group forms anions (likes to gain electrons)?
Alkali metals (+1)
Alkaline earth metals (+2)
Halogens (-1)
Noble Gases
Group with the largest atomic radii?
Alkali Metals, Period 7
Halogens, Period 2
Noble gases, Period 2
Alkaline Earth metals, Period 4
Group with the lowest ionization energy
Alkali metals
Alkaline earth metals
Halogens
Noble gases
Group with the highest electronegativity. HINT: Fluorine
Alkali metals
Halogens
Noble gases
none of the above
Group with the lowest electronegativity. HINT: Lithium
Alkali metals
Alkaline earth metals
Noble Gases
Transition metals
