He arranged the elements in order of increasing atomic mass
What is Mendeleev
100
This is what the Periodic table usually displays
What is symbol, name of the element and information about the structure
100
increases from top to bottom and decreases from left to right. the more electrons are added the more this changes. Nitrogen is 70 pm and Fluorine is 62 pm
What is Atomic Radius
100
electrons in the highest occupied energy level
What is Valence Electrons
100
although composed of ions, they are electrically neutral
What is Ionic componds
200
The elements on the periodic table are arranged in this way
What is order of increasing atomic number
200
name of group 1A and 2A
What is Alkali metals and Alkaline Earth Metals
200
________ is a positive Ion, and _________ is a negative ion
What is Cation an Anion
200
atoms tend to achieve the electron configuration of a noble gas
What is Octet Rule
200
1.Crystals at room temperature
2. High melting point
3.Conducts an electric current
What is Properties of Ionic compounds
300
When elements are arranged by increasing atomic number there is a periodic repetition of their chemical and physical properties
What is Periodic Law
300
name of group 7A
What is Halogens
300
Energy that tends to decrease from top to bottom and increase from left to right. so fluorine has the highest
What is Ionization energy
300
the metal loses an electron and produces a __________, positively charged ion
What is cation
300
force of attraction between the free-floating valence electrons and the positively charged metal ions
What is Metallic Bond
400
These are the three classes of elements
What is Metals, Nonmetals, and Metalloids
400
group 8A also known as inert elements
What is Noble gases
400
increases from top to bottom and decreases from left to right. as it loses or gains electrons
What is Ionic Size
400
nonmetal gains an electrons and forms a __________, negatively charged ion
What is Anion
400
mixtures of two or more elements, at least one of which is a metal
What is alloy
500
__________ give off electrons and __________ gain electrons
What is Metals and NonMetals
500
1s2 2s2 2p6
What is Neon
500
ability of atom of elements to attract electrons when the atom is in a compound. decreases from top to bottom and increase from left to right
What is Electronegativity
500
what type of ion will Nitrogen form?
What is N3-
500
metals can be drawn into wires and shaped. so they are__________ and __________