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Neutral calcium has 20 protons and 20 electrons. The first 20 atomic orbitals are filled as 1s2 2s2 2p6 3s2 3p6 4s2. The shorthand for this is [Ar] 4s2 since argon's configuration is 1s2 2s2 2p6 3s2 3p6.

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āˆ™ 13y ago
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āˆ™ 4mo ago

The shorthand electron configuration of calcium is [Ar]4sĀ². This notation represents the electron configuration of calcium (Z=20) taking into account the electron configuration of argon (Z=18).

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āˆ™ 13y ago

[Ar] 4s2 i think

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āˆ™ 12y ago

1s22s22p63s23p64s2

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āˆ™ 13y ago

[Ar] 4s2

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Sodium

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Iron

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Q: What is the shorthand electron configuation of calcium?
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