1. What is the mass of 5.05 mL of air if the density of air is 1200.0 g/mL?

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?

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.