The electrons are what determines the energy level and reaction of the valence shell, hope it helps ❤️✌️
I think it’s 1 Carbon, 4 hydrogens.
Lithium
Li → Li⁺ + e⁻
Li 1s²2s¹ → Li⁺ 1s² + e⁻
Answer:
7.874 g/cm³ is the density
Answer:
5 mg
Explanation:
If one half life is 4 hours, then 3 half lives is 12 hours.
This means that the sample will decay to 1/8 of its original amount.
So, the answer is 40(1/8) = 5 mg.
