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Chemistry

(a) What are the following groups known as?

  1. Group 1
  2. Group 17
  3. Group 18

(b) Name two elements of each group.

Periodic Table

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Answer

(a) The groups are knows as:

  1. Group 1 — Alkali metals
  2. Group 17 — Halogens
  3. Group 18 — Noble gases

(b) Two elements of each group are:

  1. Group 1 — Lithium, Sodium
  2. Group 17 — Fluorine, Chlorine
  3. Group 18 — Neon, Argon

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