The given valence shell electronic configuration is 4s2, 4p1. The group number is represented by valence electrons. Since valence electrons are (2 + 1 = 3), the group number is 3. Also, its valence subshell is "p", so it belongs to IIIA. As, elements of subgroup A are present in p block of periodic table.
Hence, option D is correct.
The given valence shell electronic configuration is 4s2, 4p1. The group number is represented by valence electrons. Since valence electrons are (2 + 1 = 3), the group number is 3. Also, its valence subshell is "p", so it belongs to IIIA. As, elements of subgroup A are present in p block of periodic table.
Hence, option D is correct.