Question

elements can also be classified by family, using the color coding at the top of the page to help identify the family names and their element members.

1. how many elements belong to the alkali metal family? _____

list the member elements by their symbol.

1. www.ptable.com click on the group name for the alkali metals family in the legend at the top of the table. answer the following about the alkali metals:

a) what are 3 similar properties of these elements?

b) where are these found naturally and in what phase (solid, liquid or gas?)

Explanation:

Question 7

Step 1: Recall Alkali Metal Group

Alkali Metals are in Group 1 of the periodic table (excluding hydrogen in most cases for the metal family classification). The elements in Group 1 (Alkali Metals) are Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), Francium (Fr).

Step 2: Count the Elements

Count the number of these elements. There are 6 elements.

Alkali Metals share properties like: 1) They are highly reactive (especially with water, forming hydroxides and hydrogen gas). 2) They have low melting and boiling points (compared to other metals). 3) They are soft (can be cut with a knife, e.g., Na, K).

Alkali Metals are not found in their pure elemental form naturally (due to high reactivity) but are found in compounds (e.g., NaCl, KCl in minerals, seawater). In their elemental state (when isolated), they are solids at room temperature (except Fr, but even Fr is solid under standard conditions).

Answer:

Number of elements: 6
Member elements (symbols): Li, Na, K, Rb, Cs, Fr

Question 8a