We formally invoke a triple bond in $:C-=O$, a double bond in $O=O$, and a single bond in $Cl-Cl$. Given these representations, there are $6$, $4$, and $2$ electrons in each of the molecules.
$H_2$, $O_2$, $N_2$, $X_2(X=F, Cl)$... Of course there are binuclear hydrogen halides, and interhalogens...the halogens, $X_2$, feature gaseous, liquid, and solid states...
And the chalcogens........Group 16, and of course hydrogen.... Most elemental gases, save for the Noble Gases, are DIATOMIC. Lithium, beryllium, and carbon, form diatomic molecules that have spectroscopically observed.
All five ions have an equal number of electrons and therefore share the same . For example, a neutral calcium atom ($Z=20$) has $20$ electrons; it loses $color(purple)("two")$ of them...
Well, both magnesium and barium are $"alkaline earths...."$, the which give dications upon oxidation.... ...from Group 2 of . And given Group 2, there are TWO , which are readily...
How so? Well, because hydrogen is by far the most abundant element in the universe as far as we know...and commonly hydrogen appears as the $H_2$ molecule... And this occurrence...
If ice were denser than liquid water, icebergs would likely sink (even given that sea water is denser than normal water). If this were the case then oceans would likely...
Every molecule that consists of two atoms is diatomic. Only if the two atoms are the same there is a diatomic element. So $O_2$ is a diatomic element (and thus...
Gasses have the highest distance between the molecules. Liquids have moderate distace between the molecules Solids have the lowest distance between molecules....
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