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Question 18N.2.hl.TZ0.3b.ii

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Date November 2018 Marks available [Maximum mark: 2] Reference code 18N.2.hl.TZ0.3b.ii
Level hl Paper 2 Time zone TZ0
Command term Determine Question number b.ii Adapted from N/A
b.ii.
[Maximum mark: 2]
18N.2.hl.TZ0.3b.ii

Bromine can form the bromate(V) ion, BrO3−.

(b.ii)

Determine the preferred Lewis structure based on the formal charge on the bromine atom, giving your reasons.

[2]

Markscheme

«structure I» formal charge on Br = +2

OR

«structure II» formal charge on Br = 0/+1 ✔

 

structure II is preferred AND it produces formal charge closer to 0 ✔

 

Ignore any reference to formal charge on oxygen.

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