Ionization Energy
Which element has lower ionization energy?
Fr (Francium) or Cs (Cesium)
Francium
Atomic size generally _________ across this period?
Increases or decreases
Decreases (force of attraction towards the nucleus)
Electronegativity generally ________ across this period
Increases (more valence electrons)
This type of element is typically shiny, conducts heat and electricity well, and is found on the left side of the periodic table
Metal
This group of elements is highly reactive and tends to lose one electron to form a +1 ion
Alkali Metals
This element has the highest ionization energy?
Helium (He)
Atomic size generally ______ down this group?
Increases or decreases
Increases (More Energy levels)
Electronegativity generally _______ down this group
Decreases (More space away from nucleus)
This type of element is typically dull, does not conduct heat and electricity well, and is found on the right side of the periodic table
Nonmetal
This group of elements is highly reactive and tends to gain one electron to form a -1 ion
Halogens
Ionization energy generally ______ down this group?
Increases or decreases
Decreases (Increase in energy levels)
This element has the largest atomic size?
Francium (Fr)
This element has the highest electronegativity?
F (Flourine)
This type of element has properties of both metals and nonmetals, and is found along the staircase line on the periodic table
Metalloid
This group of elements is generally unreactive and has a full outer electron shell.
Noble Gases
Ionization energy generally ________ across this period?
Increases or decreases
Increases (Increase in electrons)
This element has the smallest atomic size?
Helium (He)
This element has the lowest electronegativity?
Francium (Fr)
This group of elements contains the majority of metals?
Transition metals
Reactivity _______ from left to right across a period.
Decreases
Ionization energy is the energy required to remove one of these from an atom
Electron
The atomic radius is defined as one-half the distance between the nuclei of identical atoms that are bonded together. r=d/2
Electronegativity is described as.....
Electronegativity is a measure of the ability of an atom to attract the electrons when the atom is part of a compound.
This group of elements contains the majority of nonmetals?
Halogens
Reactivity ________ from top to bottom with each group on the periodic table.
Increases