Na has atomic no. 11 whereas K has atomic no. 19 then why patassium's name comes first in reactivity series?

Asked by Kalita Padmanath | 30th Jun, 2014, 10:57: AM

Expert Answer:

The arrangement of metals in the decreasing order of their reactivity is called the activity or reactivity series of the metals.

The metal potassium is kept at the top of the series because it is most reactive.

Also it is most electropositive as it oxidises i.e., gives up valence electrons.

Answered by Vaibhav Chavan | 30th Jun, 2014, 11:14: AM