Why is `H_2` stable even though it never satisfies the octet rule ?

Why is there a shortage of water even though it occupies about 71% of the earth's surface ?

If we bring an object closer than 25 cm from the eyes, why can we not see it clearly even though it subtends a bigger angle at the eye?

Give scientific reasons: If we bring an object closer than 25 cm from the eyes, why can we not see it clearly even though it subtends a bigger angle at the eye?

Why do stable nuclei never have more protons than neutrons?

Beryllium has 2 electrons in its outer shell. so according to octet rule it will form bonds with __________.

Give reasons : Why is mercury preferred over water in making thermometers even though both of them have similar coefficient of volume expansion ?

Use your brain power! Why does the pitcher plant feed on insects even though it produces food by photosynthesis?

Cyanobacterial and heterotrophic bacteria have been clubbed together in Eubacteria of kingdom Monera as per the "Five Kingdom Classification" even though the two are vastly different from each other. Is this grouping of the two types of taxa in the same kingdom justified? If so why?

Why He_2 molecule is not stable ?