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WorksheetsPeriodicity
Total questions: 12
Worksheet time: 12mins
Which of the following shows a general increase across period 3 from Na to Cl?
ionic radius
atomic radius
ionization energy
melting point
Which of the physical properties below decreases with increasing atomic number for both the alkali metals and the halogens?
I. Atomic radius
II. Ionization energy
III. Melting Point
I only
II only
III only
I and III only
Which statement is correct for a periodic trend?
Ionization energy increases from Li to Cs
Melting point increases from Li to Cs
Ionization energy increased from F to I
Melting point increases from F to I
Energy required to remove one mole of electrons from one mole of a gaseous element.
Electron affinity
Atomic radius
Ionization energy
Electronegativity
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 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
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
