1s2, 2s2, 2p6, 3s2, 3p6, 4s2 After this atom gains or loses valence electron/s, what will the oxidation number be?

There is an area in idaho named craters of the moon where most of the ground is covered with basalt, adark gray, igneous rock with no visibl crystals. what can you infer about the geographical history of the area?

Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.

From the choices provided below, list the reagent(s) in order that will react with cyclopentanone to form the compound shown below.