An atom which has lost one electron would be

the body which has lost electrons becomes _____.

In the formation of the compound AB, atoms of A lost one electron each while stoms of B gained one electron each. What is the nature of bond in AB? Predict the two properties of AB.

A hydrogen atom contains only one electron. But the spectrum of hydrogen atom has many lines . Why ?

One atom has (z=25) state s electron

An atom of an element has one electron in the valence shell and the two inner shells have 8 electrons each. Find the atomic number of that element.

Rubbing a comb on hair makes the comb get -0.4C . (a) Find which material has lost electron and which one gained it. (b) Find how many electrons are transferred in this process.