An electrically neutral atom has the electron configuration 1s22s22p63s23p4 . what is the name of this atom? use the periodic table. sulfur phosphorus oxygen chlorine

Sulfur

Explanation:

If the atom is electrically neutral, it has the same number of protons as electrons. if it has this electronic configuration, 1s2 2s2 2p6 3s2 3p4.. it has 2 + 2 + 6 + 2 + 4 = 16 electrons. So it must have 16 protons and atomic number 16.

sulfur

Explanation:

Since the atom of the electron configuration is neutral, that means the number of proton is equal to the number of electron. The atom has not gone into reaction . it possess no charge. The electronic configuration from the question is 1s2 2s2 2p6 3s2 3p4.

From the electronic configuration you will add the superscript to get the electron number and invariably get the electronically neutral atom. Adding the superscript will be 2 + 2 + 6 + 2 + 4 = 16 electrons.

Recall the atom is neutral, that means the number of electron and proton(atomic number) is the same.  

The element with atomic number of 16 is sulfur. The electron number of chlorine is 17, oxygen is 8 and phosphorus is 15 for the neutral atoms.