I think you made a mistake for all the answers for example in the first paragraph of your answer ,the last sentence ''For example, if the noble gas is helium (He), the configuration would represent the group 13 element nitrogen (B): [He] 2s²2p¹.''   you have mentioned nitrogen as (B) , how is nitrogen be (B). similar clarification is needed for the second paragraph , you mentioned 'chromium (Ga): [Ar] '' and for third paragraph you mentioned '' Vanadium (V): [Ar]''

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Group 14 Elements

The following elements come under group 14 of the periodic table.