Atomic no. and atomic mass

Asked by  | 19th Mar, 2008, 09:09: AM

Expert Answer:

it is so because atomic no. tell s the no. of electrons , no. of valence electrons . n electronic confg. of an element.

all these determine properties of an element so chemical n physical properties of an element r periodic func of their atomic no.

atomic mass tells no. of protons n neutrons so arrangement acc to it cannot justify a few things to arrange elements as position of isotopes nrare earth metals

Answered by  | 21st Dec, 2017, 12:12: PM