Chemical Bonding - Result Question 53

28. Among the following species, identify the isostructural pairs.

$NF _3, NO _3^{-}, BF _3, H _3 O^{+}, N _3 H$

$(1996,1 M)$

(a) $\left[NF _3, NO _3^{-}\right]$ and $\left[BF _3, H _3 O^{+}\right]$

(b) $\left[NF _3, N _3 H\right]$ and $\left[NO _3^{-}, BF _3\right]$

(c) $\left[NF _3, H _3 O^{+}\right]$ and $\left[NO _3^{-}, BF _3\right]$

(d) $\left[NF _3, H _3 O^{+}\right]$ and $\left[N _3 H, BF _3\right]$

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Answer:

Correct Answer: 28. (c)

Solution:


<img src=“https://temp-public-img-folder.s3.amazonaws.com/sathee.prutor.images/sathee_image/cropped_2024_01_16_b4fdca9f34924034e8d8g-067_jpg_height_488_width_744_top_left_y_1125_top_left_x_271.jpg"width="380">

Therefore, $NF _3, H _3 O^{+}$ and $BF _3, NO _3^{-}$ pairs have same shape.