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2, 8, 10
2, 6, 8, 4
2, 8, 8, 2
2, 10, 2008
The electronic configuration of atom / ion can be defined by which of the following?
The element of an electric stove made
The element used in the manufacture of safety matches is
The elements that provide colour to fireworks are
The enzyme that converts glucose to ethyl alcohol is
The exhaled air contains
The existence of different isotopes of an element is due to the presence of a different number of _ in the nucleus of their atoms
The fibre least prone to catch fire is
The first metal used by man was
The following are the half lives of four active isotopes. Which one of the following is the most dangerous to handle?