Question

1s2 2s2 2p6 3s2 3p1

Answer 1

[AI-generated answer — Explain Bot]

The given sequence "1s2 2s2 2p6 3s2 3p1" represents the electron configuration of an atom. The electron configuration is a way of organizing and indicating the distribution of electrons within an atom's atomic orbitals.

To understand the electron configuration, we need to know the order in which the atomic orbitals are filled. The order is as follows: 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, and so on.

Now, let's break down the given electron configuration sequence:
- The "1s2" indicates that the first energy level (n=1) has two electrons in its 1s orbital.
- The "2s2" represents the second energy level (n=2) and its 2s orbital, which is filled with two electrons.
- The "2p6" indicates that the 2p orbital in the second energy level is filled with six electrons.
- The "3s2" represents the third energy level (n=3) and its 3s orbital, which is filled with two electrons.
- Finally, the "3p1" indicates that there is one electron in the 3p orbital.

In summary, the electronic configuration "1s2 2s2 2p6 3s2 3p1" corresponds to the element with atomic number 15, which is phosphorus (P).