Which of the following atoms has the lowest ionization potential – McqOptions

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1.	Which of the following atoms has the lowest ionization potential [AIEEE 2003]
A.	\[_{8}^{16}O\]
B.	\[_{7}^{14}N\]
C.	\[_{55}^{133}Cs\]
D.	\[_{18}^{40}Ar\]
Answer» D. \[_{18}^{40}Ar\]

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