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 the symbol of an element that matches. description match the description? An element in Period 5 and Group 3A. Yes No A metalloid in Group 4A. O Yes No A noble gas with a lower atomic number than oxygen. O Yes No A transition element in Period 5. YesNo

Explanation / Answer

A period in the periodic table is a horizontal row and a group is the vertical column. An element in period 5 and group 3A is Indium with atomic number 49. Thus,YES Indium match the description and its  symbol is In.

Metalloids in Group 4A are both Silicon and Germanium with atomic number 14 and 32 respectively. Thus, YES Silicon and Germanium match the descriptions and their symbols are Si & Ge.

Oxygen has 8 atomic number and a noble gas with a lower atomic number than oxygen is Helium with atomic number 2. Thus,Yes Helium match the description and its symbol is He.

There are 10 transition element in period 5 from Yttrium to cadmium with atomic numbers less than 92. Thus Yes Yttrium match the description and its symbol is Y.

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