Categorizing Elements Based on Melting Points, Boiling Points and Molar Volume

Please help with the following problems.

A) Which of the elements are likely to be metals?

b) Which elements are gases at STP?

c) Which element is most likely to be a non-metallic solid?

d) Which elements are liquid at 200 degrees celcius?

e) Which elements are likely to conduct well in the solid form?

For each do you mind explaining why the answer is that answer.

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...t molar volumes.

b) Which of the elements are gases at STP?

Any has has a molar volume of 22.4 L at STP. The two elements that match this are A and B.

c) Which element is most likely to be a non-metallic solid?

Based on part a, the non-metals are A, B, C, and E. For it to be ...