Question

What are the atomic numbers of the elements in Period 2?

Answer 1

The second period contains the elements lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, and neon. This situation can be explained by modern theories of atomic structure. In a quantum mechanical description of atomic structure, this period corresponds to the filling of the 2s and 2porbitals. Period 2 elements obey the octet rule in that they need eight electrons to complete their valence shell. The maximum number of electrons that these elements can accommodate is ten, two in the 1s orbital, two in the 2s orbital and six in the 2p orbital

Answer 2

Answer:

1. lithum
2. Beryllium
3. Boron
4. Carbon
5. Nitrogen
6. Oxygen
7. Flurine
8. Neon

Explanation:

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