Pros â It is considered easy to handle, store and transport. It is easier to extract from the ground than coal and more cost effective to transport. Cons-The burning of oil for energy production purposes, like coal, results in the emission of carbon gases into the atmosphere.In addition there are numerous safety hazards involved in the exploration of oil in onshore and offshore sites.his poses problems as non renewable sources of energy production are not only exhaustible but also have various negative effects on the environment and climate, both of which have long term effects on the earthâs system.
The element calcium (atomic number 20) has the electron configuration. 1s2 2s2 2p6 3s2 3p6 4s2. or in noble gas form : [Ar] 4s2. The element calcium (atomic number 20) has the electron configuration <br /> 1s2 2s2 2p6 3s2 3p6 4s2<br /><br /> or in noble gas form : [Ar] 4s2.
No other element in its ground state has the same valence electron configuration as indium. Other elements in group 13 have similar ns2np1 outer shell configurations:- Bor â¦ on B, [He] 2s2 2p1 Aluminium, Al, [Ne] 3s2 3p1 Gallium Ga [Ar] 3d10, 4s2 4p1 Indium In [Kr] 4d10 5s2 5p1 Thallium Tl [Xe] 4f14, 5d10, 6s2 6p1