Lithium is a solid phase of lithium still unknown to science. The only difference between it and ordinary lithium is that Lithium forms a crystal with an fcc unit cell and a lattice constant . Calculate the density of Lithium . Round your answer to significant digits.

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Concentrations expressed as a percent by mass are useful when the solute is a a. liquid b. gas c. solid

What are two radioactive isotopes that are used for dating rocks that are older than 10 million years