The outermost valence electron in atom A experiences an effective nuclear charge of 2 and is on average 225 pm from the nucleus. The outermost valence electron in atom B experiences an effective nuclear charge of 1 and is on average 175 pm from the nucleus. Which atom (A or B) has the highest first ionization energy?

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each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.