Respuesta :

Answer: The number 4 indicates 4 electrons.

Explanation: We are given an electronic configuration, which is:

[tex]1s^22s^22p^4[/tex]

Here,

  • The letters denote the sub-shells of an element.
  • The numbers written before the letters which are 1, 2 and 2 represents the Principle Quantum Number and these represents the energy level of the sub-shells.
  • The number which are written in the superscripts which are 2, 2 and 4 denotes the electrons which are present in the sub-shell.

Hence, 4 indicates 4 electrons present in 2p sub-shell.

th3l3g3ndz21

Answer:

4 Electrons

Explanation:

Hello, the 4 in 1s^2 , 2s^2 , 2p^4 indicates 4 electrons.

Hope this helps.

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