An element With atomic no-ll, find the period and goroup write down itselectronic configuration explainthe nature of compand from bythis element with one suitableexample and give proporties of this

An element With atomic no-ll, find the period and goroup write down

1.	An element With atomic no-ll, find the period and goroup write down itselectronic configuration explainthe nature of compand from bythis element with one suitableexample and give proporties of this
Answer» number 20 is of CALCIUM -Electronic configuration – 1s2 2S2 2P6 3s2 3p6 4s2.Group - It BELONGS to second group.Period – It belongs to 4th period.Valency – Valency of calcium is +2