Aluminium is diagonally related to (in periodic table)

Options

A. Li
B. C
C. B
D. Be

Answer

To determine which element is diagonally related to aluminum in the periodic table, we can follow these steps:

### Step 1: Understand the Position of Aluminum
Aluminum (Al) is located in group 13 (or IIIA) and period 3 of the periodic table.

### Step 2: Identify Diagonal Relationships
Diagonal relationships in the periodic table typically occur between elements that are one group apart and one period apart. This means we need to look at elements that are in the same period as aluminum but one group to the left or one group to the right.

### Step 3: Locate the Element in the Same Period
Aluminum is in period 3. The elements in period 3 are:
- Sodium (Na) - Group 1
- Magnesium (Mg) - Group 2
- Aluminum (Al) - Group 13
- Silicon (Si) - Group 14
- Phosphorus (P) - Group 15
- Sulfur (S) - Group 16
- Chlorine (Cl) - Group 17
- Argon (Ar) - Group 18

### Step 4: Identify the Element One Group to the Left
The element that is one group to the left of aluminum (Group 13) is magnesium (Mg), which is in Group 2.

### Step 5: Identify the Element One Group to the Right
The element that is one group to the right of aluminum (Group 13) is silicon (Si), which is in Group 14.

### Step 6: Identify the Diagonally Related Element
Now, we need to look at the elements in the period above aluminum (period 2):
- Lithium (Li) - Group 1
- Beryllium (Be) - Group 2
- Boron (B) - Group 13
- Carbon (C) - Group 14
- Nitrogen (N) - Group 15
- Oxygen (O) - Group 16
- Fluorine (F) - Group 17
- Neon (Ne) - Group 18

### Step 7: Determine the Diagonal Element
The element that is diagonally related to aluminum is beryllium (Be), which is in Group 2 and period 2.

### Conclusion
Thus, aluminum is diagonally related to **beryllium**.

---