1) Which pair of elements reacts most readily?

2) Which of the following properties of the halogens increase from F to I?

I.       Atomic radius

II.      Melting point

III.     Electronegativity

3) Which pair would react together most vigorously?

4) For which element are the group number and the period number the same?

5) Which of the physical properties below decrease with increasing atomic number for both the alkali metals and the halogens?

I.       Atomic radius

II.      Ionization energy

III.     Melting point

6) Rubidium is an element in the same group of the periodic table as lithium and sodium. It is likely to be a metal which has a

7) When the following species are arranged in order of increasing radius, what is the correct order?

8) What increases in equal steps of one from left to right in the periodic table for the elements lithium to neon?

9) Which property decreases down group 7 in the periodic table?

10) Which properties are typical of most non-metals in period 3 (Na to Ar)?

I.       They form ions by gaining one or more electrons.

II.      They are poor conductors of heat anelectricity.

III.           They have high melting points.

11) A potassium atom has a larger atomic radius than a sodium atom. Which statement about potassium correctly explains this difference?

12) Which factors lead to an element having a low value of first ionization energy?

I.       large atomic radius

II.      high number of occupied energy levels

III.     high nuclear charge

13) Which statement about electronegativity is correct?

14) Which statement is correct for a periodic trend?

15) Which compound of an element in period 3 reacts with water to form a solution with a pH greater than 7?

16) Which equation represents the first ionization energy of fluorine?

17) Which statement is correct for the halogen group?

18) Which of the following statements are correct?

I.       The melting points decrease from Li --> Cs for the alkali metals.

II.      The melting points increase from F --> I for the halogens.

III.     The melting points decrease from Na --> Ar for the period 3 elements.

19) Which element is a transition metal?

20) When Na, K, and Mg are arranged in increasing order of atomic radius (smallest first), which order is correct?

21) Which oxides produce an acidic solution when added to water?

I.       SiO₂

II.      P₄O₆

III.     SO₂

22) Which series is arranged in order of increasing radius?