Respuesta :

Neetoo

Answer:

A = 2s²

B = 2p⁴

or 2s² 2p⁴

Explanation:

Oxygen:

It is the eighth element of periodic table. It is present in group sixteen and second period of periodic table. It has six valance electrons. It is also called chalcogen because it is ore forming element. its atomic number is 8.

Electronic configuration:

O₈ = 1s² 2s² 2p⁴

The two electrons in 1s shell represent the core electrons while the six electrons in second shell are valance electrons.

Valance shell electronic configuration :

2s² 2p⁴

aabdulsamir

Answer:

A = 1, B = 2, C =2

Explanation:

Oxygen has an electronic configuration of 1s²2s²2p². It is the first element located in group iv. The valence electrons corresponds with the fact that it has two electrons on its outer orbital which is p-orbtial and would require 2 electrons to be stable and form a compound. It can do this with itself by forming a dimer O-O bonds or with another element by accepting electron.

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