Unit Test — Unit test Answers

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How many valence electrons does aluminum (Al) have available for bonding?

Which element is classified as an alkali metal?

Which of the following symbols would be included in the noble gas notation for an element that had valence electrons in the 5s subshell?

Consider the model of the nitrogen atom.Which electron configuration matches this model?

1s22s22p2

1s22s22p3

1s22s22p4

1s22s22p5

Which statement about Niels Bohr’s atomic model is true?

Higher orbits have lower energies.

Each orbit has a specific energy level.

Electrons can exist in any energy level.

Orbits close to the nucleus have no energy.

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