The Periodic Table (Grade 10 NSC Matric Physical Sciences): Flashcards
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Basis of periodic table arrangement
Basis of periodic table arrangement
By atomic number
Creator of periodic table and year
Creator of periodic table and year
Dmitri Mendeleev, 1869
Groups in periodic table
Groups in periodic table
Vertical columns, numbered 1-18
Periods in periodic table
Periods in periodic table
Horizontal rows, numbered 1-7
Most electronegative element
Most electronegative element
Fluorine
Define atomic radius
Define atomic radius
Measure of atom size from centre to outer electrons
Define ionisation energy
Define ionisation energy
Energy to remove one electron from atom in gas phase
Atomic radius trend across period
Atomic radius trend across period
Decreases (atoms get smaller)
Ionisation energy trend across period
Ionisation energy trend across period
Increases (harder to remove electrons)
Electronegativity trend across period
Electronegativity trend across period
Increases (attracts electrons more strongly)