Sunscreen can have negative effects on corals and other marine organisms under certain circumstances.
Answer:
Branch of science concerned with the chemical and physicochemical processes and substances that occur within living organisms.
Solids are tightly compacted
Liquids are medium
And gases are very spaced and floating around
Nitrogen is 5 valence electrons
oxygen is 6 valence electrons
fluorine is 7 electrons
Answer:
The elements are in the same column/group IIA.
See the explanation below, please.
Explanation:
The elements Calcium, Strontium, Beryllium, Magnesium, Barium and Radio, belong to the group of alkaline earth metals located in group IIA of the periodic table, they require 2 electrons to complete their octet (they have 2 valence electrons). reagents than alkali metals.
