Additionally, the effective nuclear charge has increased, and thus the electrons are attracted more strongly towards the nucleus and the ionic radius decreases.
ɐdˈɪʃənəli, ðɪ ɪfˈɛktɪv nˈuːklɪɹ tʃˈɑːɹdʒ hɐz ɪŋkɹˈiːst, ænd ðˈʌs ðɪ ᵻlˈɛktɹɑːnz ɑːɹ ɐtɹˈæktᵻd mˈoːɹ stɹˈɔŋli təwˈɔːɹdz ðə nˈuːklɪəs ænd ðɪ aɪˈɑːnɪk ɹˈeɪdɪəs dˈiːkɹiːsᵻz.