Name 12 The preriodic table is arranged in columns and rows. What arc thc columns and
the rows of the periodic table called?
A periods and energy levels C atomic numbers and periods
B
grours
and periods
grouns
and atomic number

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?