Chemistry homework helppplease?

Question

more than one answer
Which of the following bonds would you expect to be covalent ?
a) Na--F

b) O--Cl

c) C--F

d) Ca--O

e) S--H

Which of the following compounds can exist as cis and trans isomers ?



a) Cl2CH2


b) CHCl=CCl-CH3


c) ClBrCHCl


d) CBrH=CH-CH2Cl


e) 1,2-dichloropropene

Answer 1

The covalent bonds will be b, c and e.

Compounds b and d will definitely have cis-trans isomers, and e will as long as you mean 1,2-dichloroprop-1-ene.

Answer 2

The valence "ring" or maximum outer ring is what bonds contained in the bonding of atoms. ONE significant rule is that the outer ring must have 8 electrons to be bonded. SO shall we are saying we are desirous to type a bond between fluoride (has 7 valence electrons) and Hydrogen (a million valence electron) they could create a suitable bond. if we had to bond hydrogen and oxygen(6 valence) at the same time we would want to wish 2 hydrogen for a million oxygen. truly take the 8 finished you want and subtract between the chemical compounds faraway from it to illustrate with the oxygen and hydrogen>> 8 finished necessary-6 in oxygen= 2 necessary .