The coordination number of an underlined atom is greater than or equal to 4 in how many of the following?
Let S be the set of prime numbers greater than or equal to 2 and less than 100. Multiply all elements of S. With how many consecutive zeros will the product end?
Statement 1: Number of neutrons is always greater than or equal to the number of protons in any given atom except hydrogen. Statement 2: Number of electrons is always equal to the number of protons in a neutral atom.