a) Carbon = 6, Hydrogen = 1, Sodium = 11, Neon = 20.
b) Ca+: 2.8.8.1, P3+: 2.8.8
c) -259 + 273 = 14K
d) Red phosphorus. This is because it has a higher melting point.
e) The one of atomic number 24. This is because the mass number is closer to the relative atomic mass
(R.A.M) showing that it contributes to R.A.M more than the other two isotopes.
f) Al4C3
g) The melting point of magnesium is higher than that of sodium because magnesium has many delocalized
electrons hence strong metallic bonds.
johnmulu answered the question on April 7, 2017 at 12:48
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