1. the elements most likely to form more than one type of ion are the a. transition metals b. alkali metals c. halogens d. alkaline earth metals

Which element in the third period would you expect to have the larger atomic radius, sodium (na) or sulfur (s)? a. sodium, because it has a higher effective nuclear charge attracting electrons in fewer energy levels. b. sodium, because it has fewer protons attracting electrons in the same energy levels. c. sulfur, because it has more protons attracting electrons in more energy levels. d. sulfur, because it has a higher effective nuclear charge attracting electrons in the same energy levels.

According to periodic trend, which of the following most likely has the highest ionization energy? kr be ni sc

Is 9 correct? and can someone me with 10? it’s due tomorrow, you