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There are billions and billions of stars.

The universe is vast and old, with our sun one of bil­lions of stars in a local galaxy, joined by billions of similar galaxies occupying the depths of space beyond.

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Practice

We have to define the exact place of the last electron for the element Neon¹⁰

  1. We have to configure the electrons 1s²,2s²,2p⁶
  2. Now we focus on the last number 2p⁶

• n (the number before the letter) = 2

• ℓ ( = P ) = 1

3. We define P's orbitals

2p⁶ ==> 3 orbs ==> 6 electrons

Every orb contains 2 electrons

4. We have to define spin

|(+½)¹ (-½)⁴|.|(+½)² (-½)⁵ |.|(+½)³ (-½)⁶|.

-----[-1]------. -----[0]------. -----[1]------

The order of spin is marked on top of the electron¹

• mℓ (last electron place) = 1

• ms = -½

Hope you enjoy the explanation :)

See you in the next post 👋.

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