The formula unit of compounds formed depends on the valency of the combining ions.
The formula unit is the smallest unit of an ionic substance that gives us a picture of the ratio in which ions are combined in the ionic compound.
Usually, the formula unit is written based on the valency of the ions.
For the ions listed;
Li+ and 02- forms Li2O
Mg2+ and S2- forms MgS
A13+ and CI- forms AlCl3
Na+ and N3- forms Na3N
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Answer:
26.5°C
Explanation:
Heat added is the product of mass, specific heat capacity, and change in temperature.
q = mC(T − T₀)
25.7 cal = (18.4 g) (0.215 cal/g/°C) (T − 20.0°C)
T = 26.5°C
B. Deforestation and burning of fossil fuels. <span />
<span>2 Na + CaF</span>₂<span> = 2 NaF + Ca
is an example of a </span>single- replacement
answer D
hope this helps!
Less than that of nitrogen and oxygen remember cnof "see noff" . this is the order of electronegativity carbon is less than nitrogen which is less than oxygen which is less than fluorine.