What happens to the reactivity of electropositive elements within a group?
What happens to the reactivity of electropositive elements within a group? why?
Which is smaller in between sodium and aluminium, Why?
Why are lanthanides and actinides kept separately in the modern periodic table?
Among Magnesium and calcium, Which element is more reactive? Give reason.
Why reactivity of group VIII A elements are not affected by their atomic size?
Why chemical reactivity of VII A group decreases on moving downward?
Why chemical creativity of group I A increases on moving downward.
Explain the position of hydrogen in the modern periodic table.
Why the f-block elements are called inner transition elements?
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