Question

match each two - dimensional structure to its correct three - dimensional description. drag the appropriate items to their respective bins. view available hint(s) reset help linear y - x - y y = x = y trigonal planar y - x - y y - x - y bent y - x = y y - x - y tetrahedral y - x - y y - x - y trigonal pyramidal y - x - y y - x = y submit previous answer x incorrect; try again; 4 attempts remaining you sorted 3 out of 6 items incorrectly. a molecule with three outer atoms and one lone pair has a total of four electron groups. therefore, 120 degrees is not a possible bond provide feedback

Explanation:

Step1: Recall VSEPR theory

VSEPR (Valence - Shell Electron - Pair Repulsion) theory helps determine molecular geometries.

Step2: Analyze linear structure

For linear structures ($Y - X - Y$ and $Y=X = Y$), the central atom $X$ has either 2 bonding pairs with no lone pairs or is involved in double - bonds in a way that gives a linear shape.

Step3: Analyze trigonal planar structure

In trigonal planar ($Y - X - Y$ with a lone pair on $X$), the central atom $X$ has 3 bonding pairs and 0 lone pairs, and the electron - group geometry and molecular geometry are trigonal planar.

Step4: Analyze bent structure

Bent structures ($Y - \ddot{X}-Y$ and $Y - \ddot{X}=Y$) occur when the central atom $X$ has 2 bonding pairs and 1 or 2 lone pairs. The lone - pair repulsion causes the molecule to bend.

Step5: Analyze tetrahedral structure

Tetrahedral ($Y - X - Y$ with 4 bonding pairs around $X$) has the central atom $X$ surrounded by 4 bonding pairs with no lone pairs.

Step6: Analyze trigonal pyramidal structure

Trigonal pyramidal ($Y - X - Y$ with 3 bonding pairs and 1 lone pair on $X$) has the central atom $X$ with 4 electron - groups (3 bonding and 1 lone), and the lone - pair repulsion gives it a pyramidal shape.

Answer:

• Linear: $Y - X - Y$, $Y=X = Y$
• Trigonal planar: $Y - X - Y$ (with a lone - pair on $X$)
• Bent: $Y - \ddot{X}-Y$, $Y - \ddot{X}=Y$
• Tetrahedral: $Y - X - Y$ (with 4 bonding pairs around $X$)
• Trigonal pyramidal: $Y - X - Y$ (with 3 bonding pairs and 1 lone pair on $X$)