Na⁺¹₃P⁺⁵O⁻²₄
+1*3 + (+5) + (-2*4) = 0
+molecule size +steepness of the concentration gradient +temperature + steepness of the electric gradient +steepness
The answer is b, because all of the other compounds are covelent
Corresponding in size or amount to something else.
Because society has shaped our mind on what we shall think about things
