Question

What is the atomic number of an element whose atom has the following electron configuration: 1s2 2s2 2p6 3s2 3p6?

Answer 1

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electronic configuration :

1s2 2s2 2p6 3s2 3p6

the atomic number of the element is 18

The atom is Argon

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Answer 2

Explanation:

. In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule in atomic or molecular orbitals. For example, the electron configuration of the neon atom is 1s2 2s2 2p6, using the notation explained below.