Answer:
Option A,+4
Explanation:
Oxidation state of any element is the sum of oxidation of all elements =0
Here we need to find oxidation no of carbon and consider oxidation no of carbon as X and oxidation number of oxygen is -2
Then X+2(-2)=0 (since 2 oxygen atoms are there in CO2 )
X-4=0
X=+4
<span> I would guess that calcium (Ca), of all the group 2 elements, is most like magnesium (Mg), because it has the most similar size (atomic and ionic radii) to Mg. </span>
Hey there!:
Ksp =(Mg⁺²)(2F⁻)²
Ksp = (1.18*10⁻³)(2*1.18*10⁻³)²
Ksp = 6.57*10⁻⁹
Hope that helps!
Answer:
if your title doesn't have enough information, make a list of the key words ... If you are not sure what should be included in each summary sentence, use ... Often you can present the hypothesis and the supporting reasoning in one paragraph. ... Describe specific parts of the procedure or data that contributed to your learning.
Explanation: