What was the significance to india of the persian conquest of the indus valley and kashmir under emperor darius in the sixth century b. c.e.?

India had a greater contact and net work with other areas or territory.

Explanation:

This lead to the introduction of new ideas and they also learnt new techniques.

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.