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PH3 is not hydrogen bonded whereas NH3 is hydrogen bonded. Hydrogen bonding is the strongest type of covalent bonding.

It can be argued to a large extent that Stalin's strengths were the main reason why Stalin took control of the Soviet Union in the years 1924-28. It is also important to consider other relevant factors su...

Plants are able to respond to the environment in multiple ways. Shoots grow upwards, towards light, in a process called phototropism. Roots, on the other hand, grow downwards into the earth towards moistu...

A common problem amongst Biology students is the difficulty in knowing the content well, but not being able to translate this knowledge into marks when it comes to the exam. Your exam technique is vitally...

Equate gravitational force (GMm/r^2) to centripetal force (mv^2/r). Rearrange to get v^2=GM/r. Due to the approximated circular orbit v=2pir/T so v^2=4pi^2r^2/T^2. Therefore GM/r=4pi^2r^2/T^2. Rearrangin...