On the periodic table, which group contains the noble gases?       the last group    a. the second group    b. the fourth group    c. the first group    d. same number of protons

Select the correct answer from each drop-down menu. to make a table of the elements, dmitri mendeleev sorted the elements according to their . he then split the list of elements into several columns so that elements beside each other had similar .

What is the popular use of lithium batteries

How many grams of iron can be made from 16.5 grams of fe2o3