The elements in group 1 are known as __?
What are alkali metals?
The property of reflecting light is __.
What is luster?
What are the elements in group 2 known as and how many electrons are in the outer energy level?
What is alkaline earth and two electrons?
The atomic number of an element shows ___.
What is the number of protons or electrons?
I have the smallest mass of the elements in the most reactive nonmetal group.
Who is Fluorine?
Can be drawn into wires
What is ductile?
___ are usually gases or brittle solids at room temperature.
What are nonmetals?
chemical formula for CH4 indicates
carbon and 4 hydrogen atoms
Two atoms of the element combined in a covalent bond.
What are molecules?
What are the elements in group 7A or 17 called and how many electrons are in the outer energy level?
What are halogen gases and 7 electrons?
The rule that state that all elements except hydrogen tend to have 8 electrons on their outer most energy level.
octet rule
the force that holds atoms
chemical bonding
sharing double pair of electrons is ?
double covalent bond?
What are the elements in group 8A or 18 called and why are they considered relatively unreactive?
What are noble gases and full outer energy levels?
Group 18 element with 10 electrons
neon
a metal with 11 electrons .
sodium
NH3 has -------------- covalent bond
single