<h2>
Emma here<em>
!</em></h2>
Answer:
im pretty sure its decreases going across a row (left to right)
Explanation:
As you move from left to right across a period on the periodic table the size of an atom will decrease
<h3>Hope this helps<em>! </em>Have a nice day<em>!</em></h3>
Right answer is B . Trust me .
Answer:
Based on the Modern Periodic table, there is an increase in the electropositivity of the atom down the group as well as increases across a period. On comparing the electropositivities of the mentioned oxides central atom, it is seen that Ca is most electropositive followed by Al, Si, C, P, and S is the least electropositive.
With the decrease in the electropositivity, there is an increase in the acidity of the oxides. Thus, the increasing order of the oxides from the least acidic to the most acidic is:
CaO > Al2O3 > SiO2 > CO2 > P2O5 > SO3. Hence, CaO is the least acidic and SO3 is the most acidic.
Answer: he expected to find no darkening of the film all because it hadn't been exposed to sunlight yet.
