Question Video: Recalling Which Particle’s Number in the Nucleus of an Atom the Elements in the Modern Periodic Table Are Arranged By Science • Second Year of Preparatory School

Video Transcript

Which particle’s number in the nucleus of an atom is the ordering of elements in the modern periodic table based on? (A) Boson, (B) gluon, (C) neutron, (D) photon, (E) proton.

The nucleus of an atom contains protons and neutrons. All atoms of the same element have the same number of protons but not necessarily the same number of neutrons. As all atoms of the same element have the same number of protons, this number is included with the element symbol on the periodic table. This value is also called the atomic number. The elements of the modern periodic table are arranged in order of increasing atomic number from left to right.

So, in conclusion, the elements in the modern periodic table are ordered based on the number of protons in the nucleus of an atom, answer choice (E).