Determine the number of valence electrons in an atom of each element. a. Ba b. Cs c. Ni d. S

Use the periodic table to determine each quantity. a. the number of 2s electrons in Li, b. the number of 3d electrons in Cu, c. the number of 4p electrons in Br, d. the number of 4d electrons in Zr

Which outer electron configuration would you expect to belong to a reactive metal? To a reactive nonmetal? a. $ns^2$ b. $ns^2np^6$ c. $ns^2np^5$ d. $ns^2np^2$

How many valence electrons do each of the following elements have, and what are the specific valence electrons for each element? a. Ca b. O c. element 117 d. In e. Ar f. Bi

Give the number of valence electrons in an atom of each element. cesium

Use the periodic table to write an electron configuration for each element . Represent core electrons with the symbol of the previous noble gas in brackets. a. P, b. Ge, c. Zr, d. I.