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Trends in the periodic table indicate that the element with the greatest ionization energy is in which of the following periods and groups?

a
Period 2, Group 1
b
Period 7, Group 2
c
Period 6, Group 17
d
Period 1, Group 18

Sagot :

Answer:

D Period 1, Group 18

Explanation:

it's helium

it's top right corner of the periodic table