Sun March 03, 2013 By:

A) Where do you think hydrogen should be placed in the modern periodic table? B) How is the valency of an element determined from its position in the modern periodic table?

Expert Reply
Mon March 04, 2013
seperately in the gp I, where it is.
by knowing the position of the element in the periodic table, write its electronic configuration. this indicates its valency.
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