QUESTION 3 The 1H signal NMR corresponding to the hydrogen atoms on position d are more downfield than the 1H NMR signal that corresponds to the hydrogen atoms on position c. (1 pt) True False

True

Explanation:

1H NMR represents Proton Nuclear Magnetic resonance. It is the application of magnetic resonance with 1 hydrogen atom. The hydrogen molecule is reacted with the corresponding atom nuclei to generate signals and then hydrogen atoms move downfield.

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.

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