Posted by lalt on Monday, May 28, 2012 at 7:18pm.
What is your problem here? The subscripts (or what passes for subscripts) tell you how many atoms are there.
Its D..!!...the 2 after the Br means its attached to that element..so read as 2 X Br....there is nothing after the Mg...so that means there ais only one
So therefore its D...
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