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Alkaline earth metals TRENDS.

Published byMehmed Sökmen Modified over 5 years ago

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Presentation on theme: "Alkaline earth metals TRENDS."— Presentation transcript:

1 Alkaline earth metals TRENDS

2 Atomic Mass- mass of an atom
Be 9.012amu Mg 24.305amu Ca 40.078amu Sr 87.62amu Ba amu Ra 226amu

3 Atomic size- radius of an atom
Be 112pm Mg 145pm Ca 194pm Sr 219pm Ba 254pm Ra n/a

4 reactivity- ability of an element to undergo chemical changes
Be Does not react with water Mg Reacts only slightly with water Ca Reacts with water Sr Reacts vigorously with water Ba Reacts violently with water Ra --

5 Shielding effect- full core shells blocking the positive nuclear force from reaching the valence shell Be 2 Mg 10 Ca 18 Sr 36 Ba 54 Ra 86

6 Ionization energy- energy required to remove an electron
Be 900 Mg 738 Ca 590 Sr 550 Ba 503 Ra 509

7 Electronegativity- tendency of an atom to attract electrons
Be 1.5 Mg 1.2 Ca 1 Sr Ba 0.9 Ra

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