From their positions in the periodic table, arrange the atoms in each of the following series in order of increasing electronegativity: Ca, H, K, N, Si.

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false

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