Chemistry - Chapter 6

metal

good conductor of heat and electric current

halogen

any nonmetal in group 7A

inner transition metal

an element whose highest occupied s sublevel and a nearby f sublevel contain electrons

representative element

an element whose highest occupied s or p sublevels are partially filled

ionization energy

the energy needed to remove an electron from an atom in the gaseous state

alkaline earth metal

an element in group 2A

cation

positively charged ion

electronegativity

the tendency of an atom to attract electrons when the atom in in a compound

transition metal

an element whose highest occupied s sublevel and a nearby s sublevel contain electrons

noble gas

an element in which the highest occupied s and p sublevels is in a compound

in periodic table, there is a periodic pattern in the physical and chemical properties of elements when they are arranged in what order

increasing atomic number

transition metals sublevel

d

representative elements

Group A elements

electron

subatomic particle that plays the greatest role in determining the physical and chemical properties of an element

from left to right across thesecond period of the periodic table

first ionization energy increases

f orbitals

inner transition metals

electronegativity

generally decreases from top to bottom within a group

atomic size generally

decreases from left to right across a period