Organize these followings from least metallic to most metallic: barium, zinc, iron and strontium.
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Zinc,iron,barium,strontium
Explanation:
As zinc is least reactive than other three it is placed first. iron is less reactive to barium hence placed in 2nd . barium is comparatively medium reactive to strontium sk it is 3rd and strontoum is more reactive so places 4th.
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