Which of the following elements is most likely to form a covalent bond?
a. k
b. mg
c. cu
d. br

Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.