Answers LA-Chemistry AElements, Compounds, and Mixtures

Atomic Numbers and Electron Configurations Answers

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Which diagram shows a pair of electrons that have opposite spins?

A box contains an upward pointing and a downward pointing arrow.

A box contains an upward pointing arrow.

A box contains an upward pointing arrow.

A box contains two upward pointing arrows.

Which is the electron configuration for lithium?

1s2

2s3

1s22s1

1s12s2

If a shell can hold a maximum of 32 electrons, what is the value of n?

Each atom of an element has the following electron configuration.1s22s22p63s23p64s23d104p65s24d105p5What is the name of the element?

bromine

iodine

tellurium

xenon

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