5.18 Electron Configurations

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What is the chemical symbol for the element that has the electron configuration described by the Aufbau diagram above?

Al

In an electron configuration code, superscripts placed on sub-levels indicate the number of ____.

Electrons

In an electron configuration code, superscripts placed on sub-levels indicate the number of _____.

Electrons

What do the superscripts in an electron configuration represent?

Electrons

The electronic configuration of carbon is 2,2,2.

FALSE

The electron configuration of the neon atom is 1s^2 2s^2 2p^6.

TRUE

Electron configuration notation eliminates...

The boxes and arrows of orbital filling diagrams. Each occupied sublevel designation is written followed by a superscript that is the number of electrons in that sublevel.

What do all of the elements in a given horizontal row of the Periodic Table have in common?

They have the same number of occupied principal energy levels.

Using the periodic table, which of the following is the correct electron configuration of vanadium in its ground state?

[Ar]4s^2 3d^3

The quantum number of an electron is given. The quantum number of another electron is given below. If it's in the same atom as the electron above, what possible values of A are valid?

0

How many electrons are in an atom with the electron configuration of 1s^2 2s^2 2p^6 3s^1?

11

Use the following electron configuration of europium 1s^2 2s^2 2p^6 3s^2 3p^6 3d^10 4s^2 4p^6 4d^10 4f^7 5s^2 5p^6 6s^2 How many sublevels are occupied?"

13

Each orbital designation has a superscript number that gives the number of ____ in that orbital sublevel.

Electrons

Electron configuration notation simplifies the indication of where electrons are located in a specific atom.

N/A

Superscripts are used to indicate the number of electrons in a given sublevel.

N/A

An atom has the electron configuration of 1s^2 2s^2 2p^5. How many electrons are in that atom?

Nine

The ground state electronic configuration of _____ atom can be represented by

Nitrogen

What is the electron configuration of the element in period 2 that has 6 valence electrons?

1s^2 2s^2 2p^4

Which element configuration is that of an element in the fourth period?

1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^1

Use the following electron configuration of europium 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^6 6s^2 4f^7 How many principal energy levels are completely filled?

3


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