Aarti Varshney , asked a question
Subject: Science , asked on 8/3/11

1.a metal 'M' forms an oxide having  formula M2O.it belongs to 4th period in the modern periodic table .identify the metal.write its atomic number and valency ?

Tanmana Mitra , added an answer, on 8/3/11
102 helpful votes in Science

 POTASSIUM 'K'  ATOMIC NO -  19  VALENCY - 1

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