WAEC - Chemistry (2013 - No. 5)
Which of the following statements is correct?
Atomic size decreases down the group
Atomic size increases across the period
Anions are smaller than the parent atom
Cations are smaller than the parent atom
คำอธิบาย
A cation is a positively charged ion. This means electron is given out by a cation, hence the cation is smaller than the parent atom.