Lewis diagrams of molecules of three different hydrocarbons are shown above. Which of the following claims about the molecules is best supported by the diagrams?

The correct claim about the molecules that best supports the diagrams is :

( D ) The strongest carbon to carbon bond occurs in molecule 3  

The first molecule ( molecule 1 ) is an alkane because the molecule is made up of only single bonds connecting the carbon atoms.

while the second mole ( molecule 2 ) is an alkene because of the presence of a double bond connecting carbon atoms.

and the third molecule ( molecule 3 ) is an alkyne because of the presence of a triple bond connecting carbon atoms.

Therefore  Alkynes have the strongest of of bonds between its carbon atoms  because of the presence of a triple connecting carbon atoms.

Hence we can conclude that The strongest carbon to carbon bond occurs in molecule 3

Learn more about alkynes : link

D

Explanation:

Seeing the Lewis formula for each of the molecules, we can attempt to write the condensed structural formula for each.

What we notice is that while there are purely single bonds between the carbon atoms in the first molecule, there is a double bond in the second molecule and a triple bond in the third

What we can deduce from this is that these are alkanes , alkenes and alkynes

The alkynes have the strongest of the three bonds and thus they have the strongest bonds in the mix

Since molecule 3 is an alkyne, then we can say that it has the strongest of the bonds

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.