Question about Scientific Explorer My First Chemistry Kit
The valency (the number of electrons in the valence shell) of the element carbon is 4.
With most periodic tables of the elements, you can deduce the valency of all of the representative elements [the most common ones in the first 3 rows of the periodic table, and in the first through 8th columns (or groups or families) of the periodic table].
You need only look at the top of each group for the number-letter code (for example, "4A" appears above the group in which carbon resides.
A handy thing about the periodic table is that elements in the same group or family have the same valency. For example, silicon (Si) which is below carbon in the same family as carbon, also has a valency of 4. Another example is that all of the elements in the 1A column (the alkali metals) have the same valency of 1.
Posted on Jan 10, 2011
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Posted on Jan 02, 2017
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