Review sheet for chapter 14: Periodic Law
1. What are two important contributions Mendeleev made to the development of the periodic
table?
2.
3.
4.
5.
6.
Circle the more active metal.
Li or Cs
Mg or Al
K or Ca
Circle the more active non-metal.
B or F
Cl or I
S or F
F or Ne
Circle the bigger atom.
Li or F
Na or Rb
F or I
Br or Ga
Circle the bigger ion.
Li+ or B+3
Na+ or Na
F or FN-3 or FNa+ or ClCircle the atom with the smaller first ionization energy (gives away electrons easier).
Na or Cl
Li or K
Cs or F
O or Te
7. Circle the element with the higher electronegativity
Na or Cl
Li or K
Cs or F
O or Te
8. Why do Li, Na and K have similar chemical properties, while F, Ne and Na have very
different properties?
9. Why do the transition metals have similar properties? Why do the inner transition metals
have very similar properties?
10. Why do the atoms get larger in volume as you go down a group but smaller as you go
from left to right across a row?
Use electron configurations to explain the following questions. (11 - 14)
11. Is it easier to remove an electron from Sodium or from Chlorine? Why?
12. Why is it much easier to remove the first electron from potassium than the second
electron?
13. Why is it much easier to remove the second electron from Magnesium than the second
electron from Sodium?
14. Which would rather acquire (gain) an electron, Sodium or Fluorine? Why?
15. Which of these elements are examples of each of the following?
Mg
O
Al
Ar
Na
Cl
a) want to acquire another electron (high, negative electron affinity)
b) don't care about acquiring another electron (low, negative electron affinity)
c) don't want to acquire another electron (positive electron affinity)
16. Which electrons are the first removed from Mn? ______________________
17. What would be the outer electron configuration for element number 118?
Periodic Law
Crossword
Clues Across:
2. ! Tendency for an atom to attract electrons to
itself in a chemical bond. (17)
4. ! Mendeleev said the properties of the elements
were periodic functions of their atomic ___. (7)
5. ! A 4th series transition metal, electron config.
an exception to the usual rules. (8)
11. ! A transition metal used in coins. (6)
12. ! Has the lowest ionization energy in the 4th
series. (gives away e- easiest) (9)
13. Another name for the d block is __ metals. (10)
14. The energy change when an atom acquires an
electron is electron _______. (8)
15. This radioactive gas doesn't want to gain or
lose electrons. (5)
17. ! This 3rd series element wants to lose 3
electrons, but not 4 electrons. (8)
19. ! This metalloid has outer electron config. of
3s2 3p2. (7)
22. ! Most active non-metal in the 4th series. (7)
23. ! The energy to remove an electron from an
atom is ______ energy. (10)
26. ! Has the highest electronegativity of the 3rd
series. (8)
27. ! The name for the elements which don't want
to gain or lose electrons, _____ gases. (5)
Clues Down:
1. An extremely poisonous synthetic element used
in nuclear reactors and bombs. (9)
3 A vertical column in the periodic table. (5)
6. ! The group with the most active non-metals. (7)
7. ! Another name for the f block is _______
transition metals. (5)
8. ! A strong transition metal used in aircraft. It has
two 3d electrons. (8)
9. ! Another name for a series. (6)
10. ! The most active alkaline earth metal. (6)
12. ! The only synthetic element in the 6th series.
(10)
14. ! The group with the most active metals. (6)
16. ! The non-metal in Group IVB. (6)
18. ! The element in the 5th series that most wants
to gain an electron. (6)
20. ! The largest atom in the 2nd series. (7)
21. ! The most active non-metal in group VIB. (6)
24. ! A common transition metal that has 6
electrons in its 3d sublevel. (4)
25. ! The smallest atom in the 2nd series. (4)
Questions about the Elements
1. Is each of the following a a) Metal? b) Non-metal? c) Metalloid?
________ Tellurium
________ Antimony
________ Rhodium
________ Radon
________ Selenium
________ Niobium
________ Ruthenium
________ Phosphorus
________ Iodine
2. Which of the following is filling the 4d sublevel? 4f ? 5f ? 6p? (that is, the last electron
goes into that sublevel)
___ Protactinium
____ Praseodymium
____ Polonium
___ Palladium
3. How many outer electrons does each of the following have?
________ Beryllium
________ Nitrogen
________ Silicon
________ Krypton
________ Calcium
________ Bismuth
4. What is the outer electron configuration of the following?
________ Boron
________ Oxygen
________ Sodium
________ Thallium
________ Tellurium
________ Cesium
5. What charge ion is made by the following?
________ Sodium
________ Chlorine
________ Xenon
________Thallium
________ Radium
________ Selenium
6. Is each of the following a(n):
a) Alkali metal?
b) Alkaline earth metal?
c) Transition metal?
d) Inner transition metal?
________ Erbium
________ Strontium
________ Cesium
________ Barium
________ Rhenium
________ Rubidium
7. Which is the more active metal?
8. Which is the more active non-metal?
Rubidium or Indium
Chlorine or Sulfur
Calcium or Barium
Oxygen or Fluorine
9. Which is bigger (in volume, not which is heavier)?
Germanium or Tin
Germanium or Selenium
The ion made from Sulfur or the ion made from Sodium
The ion made from Magnesium or the ion made from Sodium
10. Which of these wants to gain an electron? Sulfur, Vanadium, Krypton?
11. Which of these gains an electron the easiest? Selenium, Silicon, Oxygen?
11. Which of these wants to lose an electron? Krypton, Calcium, Gallium?
13. Which of these loses an electron the easiest? Nitrogen, Tin, Barium?
14. Which has the highest electronegativity? Cesium, Aluminum, Chlorine?
Chemistry puzzle : Name that element!!!
Chemists are arguing over names for new elements. Some want to name new
elements after scientists, countries, their mothers, etc. I've come up with a better name for
element 95. To figure it out, first use your periodic table and your brain to figure out the
following elements. Write them on the lines below.
1.
2.
3.
4.
5.
6.
7.
8.
9.
This lightweight noble gas is used in blimps.
This low density metal is used in aircraft construction and soda cans. It has outer electron
configuration s2p1.
This non-metal solid is purple-black. It dissolves in alcohol and is used as an antiseptic. It's
a halogen.
This inner transition metal is synthetically prepared. It's found in the 7th series, (although
you may not realize it). Its density is almost 20 g/cm3. It's used in nuclear bombs and
reactors.
This transition metal is very malleable and dense. It's a yellow solid and often used for
jewelry. Its electron configuration is an exception to the usual rules.
This is a very active non-metal. It's a greenish yellow gas that reacts explosively with
Sodium to form table salt.
This solid non-metal substance is yellow and brittle. "Rotten egg" smell contains this
element. Its happy ION has electron configuration of [Ne] 3s23p6 .
This shiny, silver colored Alkaline Earth Metal has a low density. It is used in flash bulbs
(which you could figure out from our labs). It's slightly smaller than sodium.
This liquid transition metal is very poisonous and is sometimes used in thermometers. It's
found in the 6th series.
1. ___ ___ ___ ___ ___ ___
6. ___ ___ ___ ___ ___ ___ ___ ___
2. ___ ___ ___ ___ ___ ___ ___ ___
7. ___ ___ ___ ___ ___ ___
3. ___ ___ ___ ___ ___ ___
8. ___ ___ ___ ___ ___ ___ ___ ___ ___
4. ___ ___ ___ ___ ___ ___ ___ ___ ___
9. ___ ___ ___ ___ ___ ___ ___
5. ___ ___ ___ ___
Copy the letters in the boxes above here: ________________________________________
Now rearrange (anagram) these letters to ________________________________________
spell my new, improved name for Element 95.