The elements in<span> groups 1a through 7a are called d. representative elements. The periodic table is organized according to increasing order of the atomic number of the elements. Groups have similar properties while the period of the elements determines the valence electrons in the outer shells.</span>
Answer:
Guar gum
sodium nitrite
artificial food colorings
monosodium glutamate
etc
Well...........thanks for posting anyway.
The answer is <span>a total of eight valence electrons
hope this help
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