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Atomic Radii and Effective Nuclear Charge

The atomic radius of an element can be predicted based on its periodic properties. Atomic radii increase going down a group in the periodic table, because successively larger valence-shell orbitals are occupied by electrons. Atomic radii generally decrease moving from left to right across a period because the effective nuclear charge increases.

1.)  Rank Ca Mg Be Sr, from largest to smallest according to their atomic radius.

2.)  Rank Li, Be, B, N, from largest to smallest according to their atomic radius.

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Posted on October 10, 2013, in Question and tagged , , , , , , , , , . Bookmark the permalink. 1 Comment.

  1. 1.) Sr, Ca, Mg, Be
    2.) Li, Be, B, N

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