Periodic Trends
Periodic Table
Ions
Misc.
Electron Configuration
100
What is the trend of atomic radii??
What is as you go to the right across the period atoms radii decreases. As you go down the periodic table atomic radii increases.
100
How many valence electrons does He have? What on the periodic table shows this?
What is 8 valence electrons. The number at the top of the columns.
100
What is an Ion?
What is an atom with an electrical charge.
100
Name an element with 5 valence electrons.
What is either N, P, As, Sb, Bi, Uup
100
How many electrons can the "S" block hold?
What is 2 electrons
200
What is the Ionic radius trend? What other trend is it the same as?
What is as you go down the periodic table ionic radii gets larger. As you go right across the periodic table ionic radii gets smaller. This trend is the same as atomic radii.
200
What does the atomic number tell us?
What is the number of protons. If it is a neutral atom it also tells us the number of electrons. It also tells us the elements place along the periodic table.
200
What is a positive ion called and how did it become positive?
What is a cation and it lost an electron.
200
What is the octet rule?
What is the idea that all elements want full outer shells and want 8 electrons to be stable and "Happy"
200
What does the first number in 1S2 represent?
What is the period that the element is in.
300
What is ionization energy? Name one element that has very low ionization energy and explain why it has low ionization energy.
What is the energy required to remove an electron. Any alkali metals are easy to remove an electron because they ant to have a full shell so they will gladly give up their one valence electron to get to the full shell underneath. Any element lower on the periodic table will have its valence electrons farther away from the nucleus and the positive protons (+and-attract). The protons and electrons wont be able to hold onto each other as tight and will more easily lose electrons (it will take less energy).
300
What do the numbers on the side of the rows of the periodic table tell us?
What is the period that the element is in. it tells us how many electron rings there are for that element.
300
What does Ca2+ mean?
What is calcium lost 2 electrons
300
A horizontal row of blocks in the periodic table is called a what??
What is a period.
300
Write the electron configuration for C (carbon).
What is 1S22S22P2
400
What is the rubber band effect and tell what trend(s) this explains.
What is the amount of protons and electrons that an element has is directly linked to its size. The more protons and electrons an element has the more those P+ and e- attract (opposites attract) and tighter they are held together. The tighter they are held together the smaller they get! Higher atomic # = more P+ & e- = Smaller atomic radii and ionic radii.
400
Write down the # of protons, electrons, and neutrons of F(Flourine).
What is 9 protons, 9 electrons, and 10 neutrons
400
Are Cations larger or smaller than their original atoms? why is this the case?
What is smaller than their original atom. In most cases they lose a shell when they lose an electron and become physically smaller than the original atom.
400
Name 3 properties of metals.
What is What is shiny, solid at room temp (except mercury), Strong, they bend without breaking, good conductors of heat and electricity, and they make a ringing sound when they are hit.
400
Write the electron configuration for Ar (Argon)
What is 1S22S22P63S23P6
500
How do scientists measure atomic radii? Why can't they measure it like you would find the radius of a circle?
What is they take two atoms and measure from one nucleus to the other and then cut it in half to get the radius. They cannot measure the regular way because electrons are in a cloud with no outer edge.
500
Write the names for the family columns of elements 1,2,7,8 of the periodic table and say whether they are likely to gain or lose electrons or neither.
What is alkali metals (lose 1 electron), alkaline earth metals (lose 2 electrons), Halogens (gain 1 electron), Noble gases (Neither they are stable)
500
Are anions bigger or smaller than their original atoms? Why is this the case?
What is they are bigger than their original atoms. This is because all the negative electrons repel each other and make the outer electron shell larger.
500
Which of these has a larger atomic radius? Ba, Cr, or Co
What is Ba (Barium)
500
Write the electron configuration for Mg2+
What is 1S22S22P6
M
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