WorksheetsPeriodicity Bellwork
Total questions: 15
Worksheet time: 15mins
Which of the following elements has the smallest atomic radius?
Sulfur
Chlorine
Aluminum
Sodium
Which atom has the largest atomic radius?
potassium
rubidium
francium
cesium
The element with the lowest electronegativity in Period 3 is -
Na
Cl
Ar
Mg
What is the tendency of an atom to attract electrons towards itself in a bond?
atomic radius
ionization energy
shielding
Electronegativity
The higher the ionization energy...
the more attracted the valence electron is to the nucleus so it is harder to remove
the less attracted the valence electron is to the nucleus so it is easier to remove
the more attracted the valence electron is to another electron, so it is harder to remove
the more repelled a valence electron is to another electron, so it is easier to remove
Why does ionization energy decrease going down a group?
Adding more energy levels makes the ve- further from the nucleus so it is easier to remove
There are more valence electrons in the outer shell so the ve- is easier to remove
There are more protons in the nucleus so the ve- is easier to remove
There are less protons in the nucleus so the ve- is easier to remove
What happens to atomic radius across a period?
the atoms get bigger because the nucleus is bigger as more protons are added
the atoms get bigger because there are more ve-
the atoms get smaller because with more attraction to the extra protons, the e- cloud moves closer to the nucleus
the atoms get bigger because there are more energy levels
Which atom has the LOWER ionization energy?
Al
Cl
