Element P has atomic number 19. To which group and period does P belong? It is a metal or a non metal ? Why?

Explanation

To determine the group and period of element P with atomic number 19, and to classify it as a metal or non-metal, we can follow these steps:

### Step 1: Identify the Element
The atomic number of element P is 19. This means it has 19 protons in its nucleus.

### Step 2: Determine the Element's Identity
Using the periodic table, we can identify that the element with atomic number 19 is potassium (K).

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