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WAEC CHEMISTRY  PAST QUESTION (OBJECTIVE QUESTIONS  JUNE 2007)

1. When sodium atom forms the ion Na+,  A. it gains one electron B. it gains one proton             C. it achieves a noble gas configuration D. its atomic number increases.            FOR MORE EXPLANATION  CLICK HER…

1 . C  for more understanding click here      2 . A        3 .C         4 .C             5 .A          6 .B          7 .A           8 .C             9 .B       10 .C        11 .A    …