Choose words from the list to fill in the blanks in the paragraphs.
Word List
metalalkali metalsemimetalalkaline earth metal
noble gasatomic massnonmetalatomic number
periodfamilyperiodic lawgroupperiodic table
halogentransition elementactinoid serieslanthanoid series
Dmitri Mendeleev developed a chartlike arrangement of the elements called the (1) He stated that if the elements were listed in order of increasing (2) , their properties repeated in a regular manner. He called this the (3) of the elements. The arrangement used today differs from that of Mendeleev in that the elements are arranged in order of increasing (4) . Each horizontal row of elements is called a(n) (5) . Each vertical column is called a(n) (6) , or, because of the resemblance between elements in the same column, at n) (7) .
In rows 4 through 7, there is a wide central section containing elements, each of which is called a(n) (8) . Rows 6 and 7 also contain two other sets of elements that are listed below the main chart. These are called the (9) and the (10) , respectively. Each of these elements, as well as those in the first two columns at the left end of the chart, is classified as a(n) (11) . Each of the elements at the right side of the chart is classified as a(n) (12) . Each of the elements between these two main types of elements, having some properties in common with each, is called a(n) (13) .
Each of the elements in the column labeled 1 is called a(n) (14) Each of the elements in the column labeled 2 is called a(n) (15) Each of the elements in column 17 is called (an) (16) . Each of the elements in column 18 is called a(n) (17) .
1. ______
2. ______
3. ______
4. ______
5. ______
6. ______
7. ______
8. ______
9. ______
10. ______
11. ______
12. ______
13. ______
14. ______
15. ______
16. ______
17. ______
1. a. How many protons does an atom of bromine (Br) have?
b. In which group is bromine found?
c. What is the name of its chemical family?
d. Is it a metal, a nonmetal, or a semimetal?
e. How does its atomic radius compare to chlorine's (Cl)?
f. How does its atomic radius compare to arsenic's (As)?
g. What ion is it most likely to form in compounds?
2. a. How many protons does an atom of magnesium (Mg) have?
b. In which group is magnesium found'?
c. What is the name of its chemical family?
d. Is it a metal, a nonmetal, or a semimetal?
e. How does its atomic radius compare to calcium's (Ca)?
f. How does its atomic radius compare with that of aluminum (Al)?
g. What ion is it most likely to form in compounds?
1a. ______
b. ______
c. ______
d. ______
e. ______
f. ______
g. ______
2a. ______
b. ______
c. ______
d. ______
e. ______
f. ______
g. ______
3. a. How many protons does an atom of potassium (K) have?
b. In which group is potassium found?
c. What is the name of its chemical family?
d. Is it a metal, a nonmetal, or a semimetal?
e. How does its atomic radius compare to sodium's (Na)?
f. How does its atomic radius compare with that of selenium (Se)?
g. What ion is it most likely to form in compounds?
2a. ______
b. ______
c. ______
d. ______
e. ______
f. ______
g. ______
Math Practice
4. Your Microwave oven sends out waves that are 4.50 x 10-3 m in length. What is their frequency and how much energy do they have?
5. It takes 4.8 x 10-18 J to make a sodium electron change energy levels. What is the frequency and wave length of the light that could do this?
6. I listen to a 93 FM radio It has a frequency of 93 million hz. What is its wavelength.
7. Put these in order of increasing atomic size
a. P Mg Clb. K Cs Lic. Ba O B Na
8. Put these in order of decreasing electron affinity Si In Sn
a. P Mg Clb. K Cs Lic. Ba O B Na
9. Put these in order of increasing electronegativity
a. P Mg Clb. K Cs Lic. Ba O B Na
10. Put these in order decreasing ionic size
a. P-3 Mg+2 Cl-1b. K+ Cs+ Li+c. Ba+2 O-2 B+3 Na+
Put these in order of increasing ionization energy
11.a. Mg Al P Sb. Tl Ga Bc. Br Sn Te Fr