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Revision notes on 3.2.1 Group 2 Elements for the OCR A Level Chemistry syllabus, written by the Chemistry experts at Save My Exams.
Reactivity Trend. Group 1 metals. The reactivity of the group 1 metals increases as you go down the group. When a group 1 element reacts its atoms only need to lose electron, as there is only 1 electron in the outer shell. When this happens, 1+ ions are formed.
The Activity Series. Metals can be ranked in order of reactivity -this is called the reactivity series or just activity series. Metals higher in reactivity can displace less reactive metals from their compounds in solutions or from their oxides. An example of a metal displacement reaction occurs between magnesium and aqueous copper (II) sulfate ...
Periodic Table Groups. Russian chemist Dimitry Mendeleev developed the periodic table in 1869 after finding that an element’s chemical properties depended on its atomic mass. He realized that certain properties were repeated when the elements were arranged according to their atomic masses.
One major difference between the group 1 and group 2 elements is their electron affinities. With their half-filled ns orbitals, the alkali metals have a significant affinity for an additional electron.
Jun 30, 2023 · Group 2 contains soft, silver metals that are less metallic in character than the Group 1 elements. Although many characteristics are common throughout the group, the heavier metals such as Ca, Sr, Ba, and Ra are almost as reactive as the Group 1 Alkali Metals .
Use the periodic table to predict the valence electron configuration of all the elements of group 2 (beryllium, magnesium, calcium, strontium, barium, and radium). Given: series of elements. Asked for: valence electron configurations. Strategy: Identify the block in the periodic table to which the group 2 elements belong.
