pd table Flashcards
(24 cards)
how was the periodic table first organzied
propeerty similarity
how is the periodic table organzed now
increasing atomic number (protons)
what are periodic trends
a pattern of repeating properties
whats a row on the periodic table called
period
whats a property of metalloids
their similar ro metals and nonmetals
where is electronegativity the stringest
top right
where is ionization the strongest
top rightw
where is shielding the stringest
bottom, transition metals are constants
where is atomic radius strongest
bottom left
what group are alkali metals
1
what group are alkaline earth metals
2
what group are transtition metals
3-12
what group are halogens
17
what group are noble gasses
18
what group are lanthinides
top
what group are acintides
bottom
what groups are representatives elements
1,2,, 13,14,15,16,17
3 properties of nonmetals
dull brittle, bad conductors
define shielding
electrons lessening their attraction to the nucleus for other electrons
shielding periodic trend
same on sides, increases down
define electronegativity
ability of an atom to attract electrons to itself
what is atomic radius
measure of the size of an atom
how do you measure atomic radius
half the distance between the nuclei of 2 bonded atoms of the same element
define ionization energy
the energy required to remove an electron from an atom
