Which noble gas is isoelectronic with the Sc3+ ion? Select the correct answer below: Ca Xe Kr Ar

Which noble gas is isoelectronic with the Sc3+ ion? Select the correct answer below: Ca Xe Kr Ar

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Which noble gas is isoelectronic with the S c 3 + ion?
Select the correct answer below:
C a
X e
K r
A r

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