1. Identify which of the given elements is the most metallic and least metallic.
a K, Li, Na
b. AI, Na, Be
most metallic
most metallic
least metallic
least metallic
2. Which will be more reactive in the following pairs of metal in every case? Explain your answer.
a. Mg or Na with HCI
b. Ag or Al with HCI
c. Fe or Zn with CuSO4
3.Given 11 Na and 17C1 compare their properties in term of
a. lonization energy
b. Electron affinity
Electronegativity​