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WorksheetsPeriodic Trends & Electron Configuration
Total questions: 20
Worksheet time: 30mins
What is the electron configuration of oxygen?
1s2 2s2 2p2
1s2 2s2 2p6
1s2 2s2 2p3
1s2 2s2 2p4
Which two trends follow the exact same pattern and are completely opposite atomic radius?
nuclear charge & shielding effect
electronegativity & ionization energy
shielding effect & ionization energy
nuclear charge & electronegatvity
What is ionization energy?
The energy of attraction to electrons of an element in a bond
The decrease in attraction between the nucleus and valence electrons due to core electrons
The amount of energy required to remove an electron from an atom.
Half the distance between the nuclei of two atoms of the same element
Which element has the highest ionization energy: helium, neon, or argon?
neon
argon
hydrogen
helium
Which element has the highest electronegativity: fluorine, chlorine, or bromine?
chlorine
bromine
oxygen
fluorine
What is the shielding effect?
Increase in attractive force between nucleus and valence electrons
The process of adding valence electrons to an atom
The process of removing valence electrons from an atom
Reduction in attractive force between nucleus and valence electrons
Which element has the highest shielding effect: lithium, sodium, or potassium?
helium
sodium
potassium
lithium
What is the electron configuration of nitrogen?
1s2 2s2 2p4
1s2 2s2 2p5
1s2 2s2 2p2
1s2 2s2 2p3
Which element has the smallest atomic radius: helium, neon, or argon?
neon
argon
oxygen
helium
Which element is represented by this orbital diagram?
carbon
nitrogen
oxygen
fluorine
Which element is represented by this orbital notation?
neon
sodium
magnesium
aluminum
This could be the dot diagram of
Mg
Cl
C
O
Which element is shown with its correct common charge once it becomes an ion?
Sodium, -1
Nitrogen, -2
Boron, -5
Calcium, +2
Covalent bonds are formed when
2 nonmetals share electrons
2 metals share electrons
a metal and nonmetal transfer electrons
a metal and nonmetal share electrons
