Rank the following in order from the lowest to highest ionization energy?
Bi, Cs, Ba
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Ответ:
Cs,Ba, Bi
Explanation:
Ionization energy increases across the period from left to right on the periodic table
Ответ:
17
Explanation:
the mass number of the element which is protons and neutrons is 17+18=35
electronic configuration is 2, 8, 7
valency of the element is 1 therefore the atomic number is 17