History of PTOE and period group trends Exam Questions with Correct Answers
vertical column - Answers group
horizontal row - Answers period
who first arranged periodic table - Answers Mendeleev
how is the periodic table currently arranged - Answers by increasing atomic #
what is periodic law - Answers elements are arrange in order of increasing atomic number and there are
periodic patterns of chemical and physical properties
electron affinity is - Answers the amount of energy released when an electron is added
d block is - Answers transition metals
who arranged current PTOE - Answers Moseley
groups do/dont have similar properties - Answers do have
periods do/dont have similar properties - Answers dont have
what do elements in a period have in common - Answers same # of energy levels
s & p blocks are - Answers representative metals
f block is - Answers inner transition metals
which side of staircase are metals - Answers left
characteristics of metal - Answers lustrous (shiny), ductile (wire), malleable (sheets), good conductors
characteristic of metalloids - Answers touch staircase, semiconductors (under high temps or when
substances are added), have some properties of metals & nonmetals
characteristics of nonmetals - Answers non-lustrous, brittle, poor conductors
which side of staircase are nonmetals - Answers right
atoms do/dont have fixed radii - Answers dont
how can you find an atom radius - Answers 1.2 the distance between the nuclei of 2 like atoms
radius of an atom is dependent on: - Answers nuclear charge (magnitude of attraction), and distance
(between elctrons and nucleus)
shielding effect - Answers inner atoms shield magnitude of nucleus from outer electrons (more energy
levels=less attraction)
vertical column - Answers group
horizontal row - Answers period
who first arranged periodic table - Answers Mendeleev
how is the periodic table currently arranged - Answers by increasing atomic #
what is periodic law - Answers elements are arrange in order of increasing atomic number and there are
periodic patterns of chemical and physical properties
electron affinity is - Answers the amount of energy released when an electron is added
d block is - Answers transition metals
who arranged current PTOE - Answers Moseley
groups do/dont have similar properties - Answers do have
periods do/dont have similar properties - Answers dont have
what do elements in a period have in common - Answers same # of energy levels
s & p blocks are - Answers representative metals
f block is - Answers inner transition metals
which side of staircase are metals - Answers left
characteristics of metal - Answers lustrous (shiny), ductile (wire), malleable (sheets), good conductors
characteristic of metalloids - Answers touch staircase, semiconductors (under high temps or when
substances are added), have some properties of metals & nonmetals
characteristics of nonmetals - Answers non-lustrous, brittle, poor conductors
which side of staircase are nonmetals - Answers right
atoms do/dont have fixed radii - Answers dont
how can you find an atom radius - Answers 1.2 the distance between the nuclei of 2 like atoms
radius of an atom is dependent on: - Answers nuclear charge (magnitude of attraction), and distance
(between elctrons and nucleus)
shielding effect - Answers inner atoms shield magnitude of nucleus from outer electrons (more energy
levels=less attraction)
