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Predicting Formula from Electron Configuration

APCHEM-LYIEX4

An element E has the electron configuration $[Kr] 4d^{10}5s^25p^2$.

Which of the following is the MOST likely chemical formula for the fluoride of E?

A

$EF_4$

B

$EF_2$

C

$EF_8$

D

$EF$