Get premium membership and access revision papers with marking schemes, video lessons and live classes.
  OR
Processing. Please wait.

 Form 2 Chemistry Questions and Answers on Chemical Families

Study the information in the table and answer the questions that follow: Explain why:
(i) the ionic radius of #K^+# is greater than that of #Na^+#
(ii) #Mg^(3+)# is smaller than that of Na+

 (3m 41s)
1095 Views     SHARE

Answer Text:
(i) This is because #K^+# has three energy level while #Na^+# has two energy levels.
(ii) This is because #Mg^(2+)# has higher nuclear charge than #Na^+# meaning that #Mg^(2+)# nuclear has 12 protons attracting 10 electrons while
#Na^+# has 11 protons attracting 10 electrons


|