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Periodic Table

QuestionAnswer
subatomic particle with positive charge proton
subatomic particle with negative charge electron
subatomic particle with no charge neutron
location of protons and neutrons nucleus
location of electrons electron cloud
the number of protons (always the smallest) atomic number
the sum of protons and neutrons (always the largest) atomic mass number
horizontal rows on the periodic table periods
vertical columns on the periodic table group (family)
number of periods on the periodic table 7
number of groups/families on the periodic table 18
number of elements on the periodic table 118
change in the number of protons different element
change in the number of neutrons isotope
change in the number of electrons ion
name of Group 1 elements Alkali Metals
name of Group 2 elements Alkali Earth Metals
name of group 17 elements Halogens
name of group 18 elements Noble Gases
are mostly solids, shiny, malleable and good conductors of heat and electricity metals
are mostly gases, dull, brittle and poor conductors of heat and electricity non-metals
have properties of metal and non-metals metalloids
metals found in the d block transition
metals found in the f block inner transition
Created the first periodic table Mendeleev
His research led to change in arrangement on the periodic table Moseley
Arrangement of elements on 1st periodic table increasing atomic mass
Arrangement of elements on current periodic table increasing atomic number
Created by: cadetjt
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