Electronegativity Transitional Reasoning Practice

Questions

1. 1.

   An investigation was conducted to compare how strongly bonded atoms attract shared electron pairs among three main-group elements, $X$, $Y$, and $Z$, belonging to Period 3 of the periodic table. Electrostatic potential analysis of their binary hydride molecules reveals that the bond in $H\text{--}X$ has the greatest accumulation of partial negative charge on the non-hydrogen atom, $H\text{--}Y$ shows an intermediate partial negative charge on $Y$, and $H\text{--}Z$ exhibits a partial positive charge on atom $Z$. Based on these observations, which of the following statements is correct regarding the periodic properties of elements $X$, $Y$, and $Z$?

   • A) Element $Z$ has the smallest atomic radius and the highest effective nuclear charge among the three elements.
   • B) Element $X$ has the highest electronegativity and therefore is located farthest to the right in Period 3.
   • C) The electronegativity of the elements decreases in the order $Z > Y > X$.
   • D) Element $Y$ attracts shared bonding electrons more strongly than element $X$ because of a smaller atomic radius.

Answers and step-by-step solutions appear after you finish the test.