Quantum Numbers and Periodic Trends

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Which of the following is the correct electron configuration for oxygen?

1s^2 2s^2 2p^4 (correct)
1s^2 2s^2 2p^5
1s^2 2s^2 2p^6
1s^2 2s^2 2p^3

The Pauli Exclusion Principle states that no two electrons in the same atom can have the same set of four quantum numbers.

True (A)

What is Hund's rule?

Hund's rule states that electrons will individually occupy each orbital within a subshell before doubling up in any one orbital.

The ______ number describes the orientation of the orbital in space.

magnetic quantum Signup and view all the answers

Match the following quantum numbers with their descriptions:

Principal quantum number (n) = Energy level of an electron Azimuthal quantum number (l) = Shape of the electron's orbital Magnetic quantum number (ml) = Orientation of the orbital in space Spin quantum number (ms) = Spin of the electron (+1/2 or -1/2) Signup and view all the answers

Which element has the electron configuration 1s^2 2s^2 2p^6 3s^2 3p^5?

Chlorine (B) Signup and view all the answers

What is electronegativity?

Electronegativity is a measure of the ability of an atom to attract electrons in a chemical bond. Signup and view all the answers

Ionization energy generally increases as you move down a group in the periodic table.

False (B) Signup and view all the answers

Which of the following elements has the highest electronegativity?

Chlorine (B) Signup and view all the answers

Elements in the same ______ of the periodic table have similar chemical properties.

group Signup and view all the answers

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