Which of the following metals (M) will form an ionic compound with nitrogen with the general formula M3N2? a
lithium (Li)
b
sodium (Na)
c
aluminum (Al)
d
beryllium (Be)

What is the maximum amount of al2(so4)3 which could be formed from 15.84 g of al and 12.89 g of cuso4?

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

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