The valence electrons of an atom of which element would feel a greater effective nuclear charge than the valence electrons of a boron (B) atom? aluminum (Al) beryllium (Be) hydrogen (H) carbon (C)
imagine life with no distractions such as todayMany people had the Renaissance mentality where they knew many things, unfortunately its rare to find that these days
They used the human mind to come up ingenious solutions.
solid understanding of math
Hydrogen is first rowberyllium is second row, as is carbon, so all that's left is aluminum, third row.