The event that is known to have 'created' the universe was the Big Bang THEORY (because it can't be proven and most people just don't want to admit that there is a God)
It is E. because the predators will have slightly more meals with their prey slightly increasing population.
Calcium is in group 2 period 4 of periodic table
Oxygen is in group 16 and period 2
neon is in period 2 and group 16.
Explanation:
Valence electron in calcium =2
valence electron in oxygen= 6
valence electron in neon= 8 valence electron.
Calcium is placed in s block group 2 of period 4.
oxygen is placed in period 2 and group 16
Neon is a p block element, placed in period 2 and group 16.
Calcium is a elecropositive element which can share or donates its electrons to for compound, it has oxidation state of +2 and hence placed in group 2
Oxygen is electronegative as it can accept or share 2 electrons to form a bond. It has oxidation of -2.
Example is CaO.
Neon has its outer shell complete it is an inert element which will not share or donate electrons. it has oxidation state of 0
Carbon dioxide (CO₂) it is a molecule with liniar geometry in which the carbon atom is bonded to oxygen atoms by double bonds. Each oxygen will have two lone pairs a electrons that are not involved in the chemical bonds.
Chemical diagram with the lone pairs represented, is found in the attached picture.
