What is the number if electrons in the outermost energy level of an oxygen atom? 2 8 4 6

The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth

In a reduction half-reaction, which amount is shown

Which of the following is the best name for a compound made from calcium and bromine? (cabr2) calcium bromide calcium dibromide monocalcium dibromide calcium bromine ii