Weboxygen group element, also called chalcogen, any of the six chemical elements making up Group 16 (VIa) of the periodic classification—namely, oxygen (O), sulfur (S), selenium … WebThe sodium orbital diagram is a graphical representation of the electron configuration of the sodium atom. This diagram shows how the electrons in the sodium atom are arranged in different orbitals.

chem chapter 2 Flashcards Quizlet

WebAn element is the simplest type of substance: one that is made up of identical atoms, such as hydrogen. Once a different type of atom is combined with the atoms in an element, a compound is created; like when oxygen is combined with hydrogen and water is formed. However, if the atoms themselves don’t bond but two different substances exist together, … WebOxygen accounts for about 23% of the atmosphere's mass with pairs of oxygen atoms stuck together to make dioxygen molecules, but it's not just in the air, we breathe. Overall, it's … family support barking and dagenham

The Periodic Table - ScienceQuiz.net

WebWhich of the following elements would you expect to be most similar to oxygen in terms of chemical properties? a) nitrogen b) fluorine c)sulfur d) chlorine. b) 16. what is the mass number for this atom? ... oxygen, O2 because it contains two of the same type of atoms … Web1) elements are composed of atoms. 2) atoms of same element are identical, but differ from other elements 3) elements can mix together nucl4) atoms only change when mixed with other elements Nucleus contains protons and neutrons Isotope An atom with the same number of protons and a different number of neutrons from other atoms of the same … WebSep 29, 2014 · Oxygen is the third most abundant element in the universe, according to the Thomas Jefferson National Accelerator Facility. However, its reactivity made it relatively rare in early Earth's... family support autism