Why this oxygane has geometry of trigonal planar?

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Oxygane from first example on left in my understading should have bent shape. I don't count one lone pair so this is sp2 including one lone pair like in second example. Why am I wrong?

1 Answer
Jul 14, 2018

Why are you wrong: the question is whack, i.e. poorly proposed...

Explanation:

For a start if you specify a handedness, you should specify which hand. On your right, or my left as I face the page? You got a long chain ether...I assume as we face the page....

#H_3C-CH_2-O-CH=CH-CH_2-O-CH_3#

Formally, BOTH oxygens are #sp_3"-hybridized"#...and thus the geometry of the oxygens and the lone pairs are both tetrahedral to a first approx..