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Base
your answers to questions 51-
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Lithium,
beryllium, boron, and fluorine are four
elements in Period 2 on the Periodic
Table.
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57 State, in terms
of electrons, why the radius of a
Be2+ ion is smaller
than the radius of a Be atom. [1]
| Answer-->Be2+
has 1 fewer
occupied principle
energy levels of
electron |
58 Draw a Lewis
electron-dot diagram for an atom
of boron. [1]
| Answer-->
link B has 3
dots |
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see
Table F halides
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