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Sidana [21]
3 years ago
8

Which pair of elements will form a covalent bond?

Chemistry
2 answers:
Vikki [24]3 years ago
3 0
A. Hydrogen and Chlorine
stepan [7]3 years ago
3 0

Answer is: hydrogen and chlorine.

Covalent bond is bond between nonmetals. Hydrogen (H) and chlorine (Cl) are nonmetals.

Hydrogen and chlorine will form hydrogen chlorine in chemical reaction:

H₂(g) + Cl₂(g) → 2HCl(g).

Other pairs will form ionic bonds, because one pair is metal (sodium, copper and zinc) and another pair is nonmetal (chlorine and bromine).

Ionic bond is the electrostatic attraction between oppositely charged ions (cations and anions).

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Explanation:

<em>1- Using only the information above, can you calculate the solubility of X in water at 15.0 °C? </em>

The information available is:

The volume of water sample = 25.0 mL.

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<u><em>2-  If you said yes, calculate it.</em></u>

∵ 25.0 mL of water sample contains → 0.30 g of the mineral compound X.

∴ 1.0 mL  of water sample contains → ??? g of the mineral compound X.

1.0 ml of water sample will contain (0.3 g/25.0 mL) 0.012 g.

<em>∴ The solubility of the mineral compound X in the water sample is</em> <u><em>0.012 g/mL.</em></u>

<u><em></em></u>

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