Which is a characteristic of most solid nonmetals?

good conductor of heat and electricity

easily breaks or crumbles into powder

shiny and ductile

can be rolled into flat sheets

1)each group 16 element has how many valence electrons? ( )4 ( )6 ( )8 ( )16 2)how many dots appear in the dot structure for calcium ion, ca2+? ( )zero ( )one ( )two ( )eight 3) which of the following atoms forms a cation to obtain an octet of outer shell electrons? ( )magnesium ( )oxygen ( )fluorine ( )helium 4) an al3+ ion contains 13 protons and 10 electrons. ( )true ( )false 5) valence and non-valence electrons are represented in lewis dot structures. ( )true ( )false

In which block of the periodic table is uranium (u) found? s blockd blockp blockf block

At element makes up all organic compounds?