Read each description in the first column of the table below. If any chemical el

Question

Read each description in the first column of the table below. If any chemical element with atomic number of 92 or less matches the description, check Yes and enter the chemical symbol of an element that matches. Otherwise check No in the second column. Does any elementIf you checked yes, give match the description? the symbol of an element that matches. description An element in Period 4 and Group 2A. Yes No A metalloid in Group 4A. Yes No Si A noble gas with a lower atomic number than phosphorus. Yes No Yes sd A transition element in Period 4 No

Explanation / Answer

description electronic configuration atomic no. yes/no symbol name peiod 4 and group 2A 4s2 20 yes Ca2040 Calcium A metalloid in group 4A(4A means 14 group no.) 3s23p2 or 4s24p2 14 or 32 yes Si1428 or Ge3272 Silicon or Germenium A noble gas with a lower atomic no than Phosphorus 2s22p6 or 1s2 2 or 10 yes He24 or Ne1020 Hellium or Neon A transition element in period 4 4s23d6 26 yes Fe2656 Iron

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