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maw [93]
2 years ago
11

Anions are formed when *

Chemistry
1 answer:
soldier1979 [14.2K]2 years ago
6 0
Anions are negative ions so it’s when an atom gains electrons
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In which region is the substance in both the solid phase and the liquid phase?<br> 1 2 3 4
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In solid NaCl, the equilibrium separation between neighboring Na+ and Cl- ions is 0.283 nm. Calculate the coulombic energy betwe
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Explanation:

It is given that r = 0.283 nm. As 1 nm = 10^{-9} m.

Hence, 0.283 nm = 0.283 \times 10^{-9} m

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where,   e = 1.6 \times 10^{-19} C

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                         = 1.423 \times 10^{-18} J

  • As 1 eV = 1.6 \times 10^{-19} J

So,       1 J = \frac{1 eV}{1.6 \times 10^{-19}}

Hence,    U = \frac{1.423 \times 10^{-18} J}{1.6 \times 10^{-19} J}

                   = 8.9 eV

  • Also,   1 J = \frac{10^{-3} kJ}{6.022 \times 10^{23}mol}

                = 1.67 \times 10^{-27} kJ/mol

Therefore, U = 1.423 \times 10^{-18} J \times 1.67 \times 10^{-27} kJ/mol

                     = 2.37 \times 10^{-45} kJ/mol

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Compare the drops of wax that harden in hot water and Cold water.
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