Explanation:
Magnesium has atomic number 12. It will be distributed in K, L, M shell in the following way:
K shell can accommodate a maximum of 2 electrons.
L shell can accommodate a maximum of 8 electrons and
M shell will accommodate 2 electrons
So the configuration becomes 2, 8,3
2.3
Is the answer help help
Answer:
Final volume = 0.103M x446ml/0.184m = 250ml
Explanation:
As time passes, the volume of solutions in the second beaker decreases and that in the first beaker increases. If we wait long enough, the final volumes and concentration in the beakers would be,
First beaker
Final concentration = 0.184M
Final volume = 0.296M x 284ml/0.184 = 457ml
Second beaker
Final concentration = 0.184M
Final volume = 0.103M x446ml/0.184m = 250ml
The hydrogen will react with 12 g B
Mass of B = 3.3 g H_2 × (3.6 g B/1.0 g H_2) = 12 g B
Answer:
Column on the periodic table tell the number of valence electrons and the types of chemicals, such as metals, nonmetals, alkaline earth metals, metalloids, halogens, noble gases.
Explanation:
