Atoms of which of the following elements have the most similar chemical properties as cadmium (Cd) atoms?
A Zinc (Zn)
B Gold (Au)
C Copper (Cu)
D Silver (Ag
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At room temperature what happens to the average kinetic energy of the molecules of a solid, liquid, and a gas

For each of the compounds below, show that the charges on the ions add up to zero. a. kbr b. cao c. li(2)o d. cacl(2) e. alcl(3)

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