Electron Configuration Practice

What do you start electron configuration with?

• 1s²

• 1d¹⁰

• 1f¹⁴

• 1p⁶

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What are the missing pieces?

• 3s² , 4d¹⁰

• 2p⁴ , 3d¹⁰

• 3p⁶ , 3d¹⁰

• 3s² , 3d¹⁰

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Choose the correct electron configuration for Beryllium (Be).

• 1s¹

• 1s² 2s²

• 1s² 2s² 2p¹

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Choose the correct electron configuration for Chlorine (Cl).

• 1s² 2s² 2p¹

• 1s² 2s² 2p⁶ 3s²

• 1s² 2s² 2p⁶ 3s² 3p⁵

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Choose the correct electron configuration for Terbium (Tb).

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁹ 5p⁶ 6s²

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f⁹

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 6s² 4f⁵

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Which of the following will have similar properties to 1s² 2s² 2p⁶ 3s² 3p²?

• carbon

• calcium

• chlorine

• cesium

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What is the position of an element in the periodic table if its electron configuration is 1s² 2s² 2p⁶ 3s² 3p⁵?

• Group 1A

• Group 2A

• Group 5A

• Group 7A

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The electron configuration of an atom is 1s²2s²2p⁶.  The number of electrons in the atom is 

• 3

• 6

• 8

• 10

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Finish the electron configuration for chlorine:

1s² 2s² (a)   3s² 3p⁶

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Match the group to the configuration that it ends with.

• halogens

• s¹

• alkali metals

• p⁶

• alkaline earth metals

• p⁵

• noble gases

• s²

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