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allsm [11]
3 years ago
10

Which of the following substances is the most soluble in water?

Chemistry
2 answers:
GuDViN [60]3 years ago
5 0
A. Sodium Chloride.
brilliants [131]3 years ago
5 0

Answer: A. Sodium chloride

Explanation: Sodium chloride (NaCl) is an ionic compound formed by transfer of electrons from sodium to chlorine.

Electronic configuration of sodium:

[Na]=1s^22s^22p^63s^1

Sodium atom will loose one electron to gain noble gas configuration and form sodium cation with +1 charge.

[Na^+]=1s^22s^22p^63s^0

Electronic configuration of chlorine:

[Cl]=1s^22s^22p^63s^23p^5

Chlorine atom will gain one electron to gain noble gas configuration and form chloride ion with -1 charge.

[Cl^-]=1s^22s^22p^63s^23p^6

These ions can be separated in polar solvent water and thus are soluble in water.

Whereas methane (CH_4) is a covalent compound formed by sharing of electrons and is soluble in non polar solvents.

Bromine (Br_2) is a covalent compound formed by sharing of electrons and is soluble in non polar solvents.

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