an element P atomic number 20 reacts with an element Q atomic number 17 to form a compound answer the following questions given reason:
write the position of P and Q in the modern periodic table and the molecular formula of the compound formed when it reacts with you
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Answers
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P =Ca Calcium
Group 2, Period 4
Q= Cl Chlorine
Group 17,Period 3
Ca +Cl2>>>CaCl2
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20 atomic number it was-calcium. And 17 was chlorine.. And position of calcium is 4th period and 2nd group.. And chlorine was 3rd period and 17th group...... If you are in insta gram follow me and msg m I will tell you trick to how to know that which period or which group by easiest method... Hope you like it
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