Which would react chemically by forming an ionic bond? a. 2chlorine atoms with 7 valence electrons each b. 1 neon atom with 8 valence electrons and 1 lithium atom with 1 valence electron c. 1 sodium atom with 1 valence electron and 1 chlorine atom with 7 valence electrons d. 2hydrogen atoms with 1 valence electron each and 1 oxygen atom with 6 valence electrons

Calculate the number of molecules present in 0.750 mol of mgo.

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

What are scientists who study fossils called? ( a ) astronomers. ( b ) biologists. ( c ) geologists. ( d ) paleontologists.