As you move down Group 1 (the alkali metals) in the periodic table, how does the metallic character of the elements change?

• A. The metallic character remains the same.
• B. The metallic character increases.
• C. The metallic character first increases, then decreases.
• D. The metallic character decreases.

Answer: (B)

Verified step by step guidance

1. Understand that metallic character refers to how readily an element can lose electrons to form positive ions, which is a key property of metals.
2. Recall that Group 1 elements (alkali metals) are located in the first column of the periodic table and include elements like lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).
3. Recognize that as you move down Group 1, the atomic radius increases because each successive element has an additional electron shell.
4. Know that with increasing atomic radius, the outermost electron is farther from the nucleus and is less tightly held due to increased shielding by inner electrons.
5. Conclude that because the outer electron is more easily lost, the metallic character increases as you move down Group 1.