2. imagine you're cooking dinner for a few of your friends. you decide to
make a salad with homemade dressing. why do you need to think about the
polarity of the different ingredients in your salad dressing in order for it to turn
out well? answer in 1 to 2 paragraphs. (10 points) think about how polar
molecules only mix with other polar molecules and nonpolar molecules only
mix with other nonpolar molecules.
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- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms