Question
Helium atom has 2 electrons in its valence shell but its valency is not 2, Explain.
Helium atom has 2 electrons in its valence shell but its valency is not 2, Explain.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Draw labelled diagrams to represent sound of (a) low pitch, and (b) high pitch, of the same loudness.
Define the terms and given one example:
Coelom.