The correct decreasing order for metallic character is:

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Strategy:
 Metallic character increases down a group (easier to lose electrons) and decreases across a period (harder to lose electrons). Metalloids and non-metals lie to the right of the table.

Step 1: Locate elements
-  (Grp 1, Per 3)
-  (Grp 2, Per 3)
-  (Grp 2, Per 2)
-  (Grp 14, Per 3 - Metalloid)
-  (Grp 15, Per 3 - Non-metal)

Step 2: Rank trends
- Across Period 3: .
- Down Group 2: .
Therefore,  is the most metallic, followed by , then , then the metalloid and non-metal.

Order: .

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