Which of the following statements are true? The electron configuration of 1s 2 2
ID: 839462 • Letter: W
Question
Which of the following statements are true?
The electron configuration of 1s22s22p63s23p64s13d6 is an excited state electron configuration for Fe.
If an element (abbreviated X) has a ground state electron configuration of [Ne]3s23p4, then the formula of the compound that X forms with sodium is NaX.
The element with a ground state electron configuration of 1s22s22p63s1 is an alkaline earth metal.
The ground state electron configuration for the undiscovered element 115 is [Rn]7s25f146d107p3.
The ground state electron configuration for Cu is [Ar]4s13d10.
The element with a ground state electron configuration of [Kr]5s24d105p5 has 10 valence electrons.
Explanation / Answer
The ground state electron configuration for the undiscovered element 115 is [Rn]7s25f146d107p3.
The ground state electron configuration for Cu is [Ar]4s13d10.
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