1. La configuración electrónica del elemento Z 13 es: A. 1s2 2s2
B. 1s2 1s2 1p6 3s1
C. 1s2 1p4 1d5
D. 1s2 2s2 2p6 3s2 3p1

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Is a pencil falling to the floor anon contact force, a force, or a contact force

Mercury metal is poured into a graduated cylinder that holds exactly 22.5 ml the mercury used to fill the cylinder mass in 306.0 g from this information calculate the density of mercury