Which of Na+ and Mg2+ is the smaller ion. Explain your answer. (2 marks)
Mg2+ is the smaller ion. (1 mark) Mg2+ has a larger nuclear charge than Na+ and has the same number of electrons. (1 mark)
Further explaination: Magnesium is further along the period than sodium is which means that the electrostatic attraction between the valence electrons and the nucleus is greater than that of sodium and the relative nuclear charge for a 2+ ion is larger than that of a 1+ ion.
JH
Related Chemistry A Level answers
All answers ▸The shape around the oxygen atom in butan-2-ol is non linear. Predict the shape and angle of the C-O-H bond giving explanations
How do you form phenylamine from benzene? Include reagents and conditions and the name of the reactions
Describe and explain the trend of reactivity of group 2 metals with water
What is the difference between covalent and dative covalent bonds?