1. _____ _____ _____ _____ _____
Identify the element based on its description. Circle the element symbols listed below that are not answers. Write them in the blanks below.
I have an atomic number of 16 __________
My mass number is 13 when I have 7 neutrons __________
I have charge of -2 when I have 36 electrons __________
I don’t exist a long time, but when I do, I have a heavier nucleus than any other element __________
I have the highest electronegativity value __________
I am the only element that does not have a full 1st shell of electrons __________
I am the largest element in group 2a __________
I have 3 electron shells and 3 electrons in my outer shell __________
I am a gas that does not react with other elements. I have 4 full electron shells __________ Ra Al U F Nd S C Er Se Cu
Uuo Kr H P
_____ _____ _____ _____ _____

2. How many outer electrons does an element in group 15 have? ______
Rank the following in increasing atomic radius, ionization energy, and electronegativity: Fr, O, Be, As, B
a. Atomic Radius:
b. Ionization Energy:
c. Electronegativity:
How many outer electrons does an element in group 15 have? ______
You have a carbon-12 atom and you want to make a carbon-13 atom. What particle do you need to add to do this? ________
Which of the following is not a property of nonmetals?
a. Dull
b. Low ionization energy
c. High electronegativity
d. Low melting point
Which of these elements has an odd # of electron shells? Ge, Pb, Rb, Ca
Rank the following from least to most shielding effect: Pb, Al, K, O
The amount of energy it would take to remove an outer electron is called __________________
How many electron shells would Ca have? _______
How many electrons in shell #2? ______
An element is powdery at room temperature, not conductive, brittle, and yellow. It is most likely a:
a. Metal b. Nonmetal c. Metalloid
Barium (Ba, 56) is likely to have which of the following properties? (choose 3)
a. Ductile d. not conductive
b. Found alone in nature e. gas at room temperature
c. Conductive f. metal
An element is shiny and reacts violently with water. What is the name of its group? ___________
Put the following elements in order of increasing atomic radius: C, Ba, F, Ag