pun-pun

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Across
  1. 2. is soft and malleable and have orange color
  2. 3. It is a main group metal in group 14 of the periodic table
  3. 4. it is a soft, silver-white, highly reactive metal
Down
  1. 1. monatomic gas that heads the noble gas group in the periodic table
  2. 2. is a soft gray alkaline earth metal
  3. 5. It is a metal in the first transition series