Describe the preparation of 500 mL of 0.1 M MgCl2. 6H2O from the solid compound? Atomic weight (At. wt): [H= 1, 0=16, Mg=24.3, CI=35.5) g/mole

20 drops hope this

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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~ trueboss72

i think it's c. if you look search electronic symbol on google and then click on wiki it shows you a

може ли да зареждате повече информация, моля