a) Which one has greater size, Na or K?
b) Justify your answer.

Which is bigger unit J or eV? Justify for your answer.

Scientists estimate that species diversity decreases as we move away from equator towards the poles. Tropical Amazonian rainforest in South America has the greatest diversity on earth. Do you agree that there is something so special about tropics that might account for greater biodiversity. Justify your answer.

Cuscuta and vanda are growing oh a mango tree. Which plant makes harm to the mango tree. Justify your answer

Which among the following configuration is more stable , d^(4) or d^(5) ? Justify your answer.

2Na + H_2 to 2NaH . In this reaction ? Justify your answer.