Periodic Table of Elements Study Guide

Halogen(reactive/stable)Nobel Gasses(non-reactive)

Alkali(reactive/unstable)

Periods: # of energy levels

Groups/Family: similar properties and Valence electrons

Non-metals

Metalloids

Metals

Practice Problems:1. What elements are found at the

following positions:a. Group 17, Period 2: ____________b. Group 14, Period 3: ____________

2. What is the name of the most reactive, unstable, metal family? _____________

3. What is the name of the most reactive, stable, non-metal family? ___________

4. How many energy levels does the element Rb contain? ___________

5. The element Ne contains 2 energy levels, what period is it found in? _____

6. What family is full of themselves and non-reactive? _________________

7. Which of the following elements have similar properties?a. S & Po b. S & P c. Ar & Al

8. Which elements are in the same period?a. B & Li b. Li & Na c. Ne & Ar

Periodic Table Properties Properties

Prop

ertie

s

Loca

tion

Lust

er (S

hine

)

Cond

ucto

rs

(hea

t/el

ectr

icity

)

Mal

leab

le (b

end)

Ducti

le (fl

atten

sh

eets

/str

ands

)

Reac

ts w

ith

Colo

r

Stat

e of

Matt

er

(roo

m te

mp.

)

Metal Left Non-metals

Greyish to white solid

Non-metal Right X

Dull X XBrittle X metals

Yellow, red,

green, colorless

gas

Metalloid

Stair case

Both Both Both Both Both All of the above

solid/gas

Nobel Gases

Group 18

X X X X none colorless gas

Practice Problems:

1. Which of the following elements contains the following characteristics?a. Li b. Sr c. Al d. Si

2. Based on the properties of the 4 elementsfound on the table to the left. Whichelement is most likely a non-metal?

a. Sample 1b. Sample 2c. Sample 3d. Sample 4

Practice Problems:1. What group/family do the following elements

belong to? _____

2. What is the purpose off valence electrons? _______________________________________

3. How many valence electrons do elements in group/family 17 have? _________

4. How many valence do the following elements have? Mg _____ N______ Cl______ He _____

Group #1 = ALL have 1 valence electron

Group #

Valence electron: Determined by GROUP # Electrons in OUTERMOST energy

level Determines an atoms REACTIVITY

Example:1.