Basicity of oxides decreases for elements from left to right in the periodic table. The order of increasing basicity is; Cs2O> MgO > SnO2 > P4O10 > Cl2O7.
The oxides of metals are known to be basic. This is a common property of all metals. However, the basicity of metallic oxides decreases across the period. So, from left to right, the oxides of bases become less acidic.
On the other hand, the oxides of nonmetals are acidic in nature. So as we move from left to right, the oxides of metals become more acidic. The order of decreasing basicity of oxides as listed in the question is;
Cs2O> MgO > SnO2 > P4O10 > Cl2O7.
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Answer:
<em><u>50% </u></em>
Explanation:
f f
F Ff Ff
f ff ff
There are two Ff and two ff
Thus, the percentage of their offspring that would be expected to have feather shanks is 
100 = 50%
