A neutral atom has an electron configuration of 1s²2s²2p⁶3s²3p².How many protons does it have in its nucleus? A) 5 B) 11 C) 14 D) 20 E) 26

Question

Quizplus · Accepted Answer

To determine the number of protons in the nucleus of the atom, we need to look at the atomic number, which is equal to the number of protons. The electron configuration given in the problem indicates that the atom has 14 electrons, filling up to the 3p subshell. This means that the atom is in the 3rd period of the periodic table. The atomic number of the element in the 3rd period is equal to the number of electrons in the valence shell, which is the 3s and 3p subshells. Therefore, the atomic number, and the number of protons in the nucleus, is 14.

A Neutral Atom Has an Electron Configuration of 1s22s22p63s23p2

A Neutral Atom Has an Electron Configuration of 1s²2s²2p⁶3s²3p²