During a lab activity, students were given samples of four different unknown elements. The students record their observations as shown in the table. Sample 1 Sample 2 Sample 3 Sample 4
shiny shiny reddish-brown colorless
high electrical

conductivity

low electrical

conductivity

low electrical

conductivity

low electrical

conductivity

solid at room temp. solid at room temp liquid at room temp. gas at room temp.
flattens when hit

with a hammer

breaks into pieces when hit with a hammer
splashes when hit

with a hammer

no effect when hit

with a hammer

boiling point:

882.9 °C
boiling point:

3265 °C
boiling point:

58.8 °C
boiling point:

-268.9 °C

Which of the following BEST identifies which element(s) in the table are metallic?

A.
Sample 1, because it is shiny and a good conductor of electricity

B.
Samples 1 and 2, because both samples are shiny and solid at room temperature

C.
Sample 2, because it is shiny and solid at room temperature

D.
Sample 3, because it is the only sample that is a liquid at room temperature