Based on its location on the periodic table, how many electrons does oxygen have in its outer energy level?
2 answers:
Answer:
The number of electrons in the outer energy level of oxygen is 6.
Explanation:
Oxygen is present in the group 16 of the periodic table. The electronic configuration of group 16 element is . The number of electrons in outer energy level of group 16 element is always found to be 6.
The addition of the number of the electrons present in the valence shell orbitals of oxygen will give the total number of electrons present in the outer energy level.
The number of electron in the outer energy level of oxygen is (2 + 4) = 6.
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1.5 % is the percent yield in the reaction.
Explanation:
Given that:
original mass of the sample used in reaction = 1.897 grams
product formed after decomposition = 1.071 grams
The reaction for the decomposition:
Mg(HCO3)2 (s) ⇒ CO2 (g) + H2O (g) + MgCO2 (s)
It says that 1 mole of Mg(HCO3)2 yielded 1 mole of MgCO2 on decomposition
68.31 grams/mole or 68.31 grams of MgCO2 is formed
percent yield = x 100
putting the values in the equation:
percent yield =
= 0.015 x100
PERCENT YIELD = 1.5 %