How much segma bonds are there ?
is it 19 segma bonds ?
I suppose you mean sigma bonds.
Looks like you may be missing several. That's because the picture is lousy.
I am getting 19.
You did the same mistake UNknown2010 did - you assumed the picture is OK.
Right , to the OP - do not forget about the hydrogens on the cyclic carbons.
do you mean (CH2) ? I counted it !
There are three trivalent carbons on the picture.
No the hydrogens attached to the cyclic carbons , note that carbon is tetravalent , this means it forms four bonds , it is assumed all of those carbons with three bonds on the cyclic motif has hydrogens attached to them.
it helps when drawing line angle structures to label all the explicit H's. If you look closer at your ring, the way its drawn you have 4 sp2 hybridized carbons, when theres really only 1, the carbonyl.
Oh that picture has a mistake
see this please
I counted sigma bonds and they were 19 !!
For some reason picture in your post doesn't show, but that's how it looks:
Again, please check if ALL carbons are tetravalent.
Please check if ALL carbons are tetravalent.
Like in: you look at the carbon, you count 1, 2, 3, 4 and then you move to the next one.
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