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why ionization energy of he+ ion is 19.6 * 10^( - 18 ) Joules instead of 8.74 * 10 ^ ( - 18 ) joules ?
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1
Answer:
4.41×10
−17
J.atom
−1
Since
IE
He
+
IE
Li
2+
=(
Z
He
+
Z
Li
2+
)
2
=
4
9
∴IE
Li
2+
=
4
9
×IE
He
+
=9/4×19.6×10
−18
=4.41×10
−17
J/atom
Energy in stationary state =−IE=−4.41×10
−17
J/atom
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