Which is a general representation of a secondary amine? A. An N is bonded to two electron dots above; with a dotted triangular line to an H, a solid triangular line to an H, and single line to an H; it is noted that the angle between the last 2 H atoms is 107 degrees.

B. An N with 2 electron dots is linked to an R 1 group with a single line, an H with a triangular line, and and H with a dotted line.

C. An N with 2 electron dots is linked to an R 1 group with a single line, an R2 group with a triangular line, and and H with a dotted line.

D. An N with 2 electron dots is linked to an R 1 group with a single line, an R 2 group with a triangular line, and an R3 with a dotted line.
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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

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