An element belongs to IIIA group and forth period in the modern perioidc table what could be the probable atomic number of that element ?

Options

A. 23
B. 49
C. 31
D. 13

Explanation

To determine the probable atomic number of an element that belongs to the IIIA group and the fourth period in the modern periodic table, we can follow these steps:

### Step 1: Identify the Group and Period
The element is specified to be in the IIIA group (or Group 13) and the fourth period of the periodic table.

### Step 2: List the Elements in Group IIIA
In Group IIIA (Group 13), the elements are:
- Boron (B) - Atomic number 5
...