How do you arrange $N H_{4}^{+}, B F_{3}, H_{2} O, C_{2} H_{2}$ $NH_4^+, BF_3, H_2O, C_2H_2$ , in increasing order of bond angle?

Question

How do you arrange $N H_{4}^{+}, B F_{3}, H_{2} O, C_{2} H_{2}$ $NH_4^+, BF_3, H_2O, C_2H_2$ , in increasing order of bond angle?

1 Answer

Impact of this question

3094 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-06-05T00:40:35

Determine Geometry of each.
$N H_{4}^{+} \Rightarrow θ_{b} = 109^{o}$ $NH_4^+ => theta_b = 109^o$
$B F_{3} \Rightarrow θ_{b} = 120^{o}$ $BF_3 => theta_b = 120^o$
$H_{2} O \Rightarrow θ_{b} = 105^{o}$ $H_2O => theta_b = 105^o$
$C_{2} H_{2} \Rightarrow H - C \equiv C - H \Rightarrow θ_{b} = 180^{o}$ $C_2H_2 => H - C-= C - H => theta_b = 180^o$

$H_{2} O < N H_{4}^{+} < B F_{3} < C_{2} H_{2}$ $H_2O < NH_4^+ < BF_3 < C_2H_2$ about both carbon centers.

Explanation:

Geometry of HOH => $A X_{2} E_{2}$ $AX_2E_2$ => Bent angular from an $A X_{4}$ $AX_4$ Tetrahedral Parent. The 2 free pair repel the 2 bonded pair to compress the bond angle from $109^{o}$ $109^o$ in a tetrahedron to $105^{o}$ $105^o$ => Bent Angular Geometry.

Geometry of $N H_{4}^{+}$ $NH_4^+$ is $A X_{4}$ $AX_4$ tetrahedral => $θ_{b} = 109^{o}$ $theta_b = 109^o$

Geometry of $B F_{3}$ $BF_3$ is $A X_{3}$ $AX_3$ Trigonal Planar $A X_{3}$ $AX_3$ => $θ_{b} = 120^{o}$ $theta_b = 120^o$

Geometry of $C_{2} H_{2}$ $C_2H_2$ is linear through two carbon centers.
=> $H - C \equiv C - H \Rightarrow θ_{b} = 180^{o}$ $H - C-= C - H => theta_b = 180^o$

Science

Math

Humanities

... and beyond

How do you arrange $N H_{4}^{+}, B F_{3}, H_{2} O, C_{2} H_{2}$ $NH_4^+, BF_3, H_2O, C_2H_2$ , in increasing order of bond angle?

1 Answer

Explanation:

Related questions

Impact of this question

Science

Math

Humanities

... and beyond

How do you arrange NH+4,BF3,H2O,C2H2NH_4^+, BF_3, H_2O, C_2H_2, in increasing order of bond angle?

1 Answer

Explanation:

Related questions

Impact of this question

How do you arrange $N H_{4}^{+}, B F_{3}, H_{2} O, C_{2} H_{2}$ $NH_4^+, BF_3, H_2O, C_2H_2$ , in increasing order of bond angle?