C table snap Lt it is a compound
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The answer is titanium because although it is not found unbound to other elements in nature, Titanium is the ninth most abundant element in the Earth's crust
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I can think of 2 off the top of my head first is friction and second is gravity
Balanced equation:
Ca(OH)2+H2SO4=CaSO4+2 H20<span />
Answer:He 1+
Explanation:
Both Hydrogen atom and helium ion are one electron species. Hence we expect the spectrum of the helium ion to closely resemble that of hydrogen atom also containing one valence electron.