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Out of the following elements, which one is the most reactive chemically?
  1. Ba
  2. Sr
  3. Ca
  4. Mg

Abhishek Dogra , 7 Years ago
Grade 11
anser 2 Answers
Aabha Misra
Barium because these are alkali earth metal and ionisation enthalpy will decrease down the group so ease of donating electron increases.
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Last Activity: 7 Years ago
Sakshi kaushik
Ba bcoz down the  group  metallic  nature  increase  due  to  decrease  In ionisation  enthalpy  it can  easily  lose  electron  and  react  so it is most  reactive  in nature. 
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Last Activity: 7 Years ago
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