A synthetic element that is used in smoke detectors

Bromine is the only halogen and nonmetal that is a__ at room temperature

The bonding that occurs when positively charged ions are surrounded by a cloud of electrons is called a__

an allotrope of carbon that is soft and can be used as a lubricant is---

what element in the oxygen group is needed in trace amounts in your diet

different forms of the same element that have different properties because of different atom arrangements are called--

which of the following elements is not in the iron triad?

at room temperature most metals are

the most unreactive group of elements is the

all synthetic elements are

elements that lie along the stair-step line of the periodic table are

three elements in group 12 of the periodic table are

which alkaline earth metal is found in chlorophyll and enables plants to make food?

which of the following elements is not a colnage

substances that conduct an electric current only under certain conditions are most likely to be--

when metals combine with non metals, the atoms of the metals tend to lose electrons, forming--bonds.