The p-block is on the right side of the standard periodic table and encompasses elements in groups 13 to 18. Their general electronic configuration is n s 2 n p 1–6 . Helium , though being the first element in group 18, is not included in the p-block. Each row of the table has a place for six p-elements except for the first row (which has none). This block is the only one having all three types of elements: metals , nonmetals , and metalloids . The p-block elements can be described on a group-by-group basis as: group 13, the icosagens ; 14, the crystallogens ; 15, the pnictogens ; 16, the chalcogens ; 17, the halogens ; and 18, the helium group , composed of the noble gases (excluding helium) and oganesson . Alternatively, the p-block can be described as containing post-transition metals ; metalloids; reactive nonmetals...
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