The atomic no.of element ABC are 6 4 and 10 and c is inert element .which of these has the smallest atomic size and why?
Dear aspirant,
According to your question and atomic numbers given by you. First you have to memorize periodic table to answer these type of questions along with their properties with their trends across the period and down the group.
As we know across the period atomic size decreases and atomic number increases. So, the smallest atomic size is of 10 which is Neon