Consider the elements A,B,C and D with atomic numbers 11,12,16 and 17, respectively. Which among the follwing statements regarding these elements are correct ?
(I) The element C will gain electron more easily than element D.
(II) The element B tends to lose electron more readily than C.
(III) The oxide of A will be least basic while that of D will be most basic.
(IV) The energy required to remove an electron from outermost shell from A will be minimum while that from D will be maximum.

Options

A. I and III only
B. I and IV only
C. II and III only
D. II and IV only

Explanation

To solve the question regarding the elements A, B, C, and D with atomic numbers 11, 12, 16, and 17 respectively, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Identify the Elements and Their Electronic Configurations:**
- Element A (Z=11): Electronic configuration is 2, 8, 1.
- Element B (Z=12): Electronic configuration is 2, 8, 2.
- Element C (Z=16): Electronic configuration is 2, 8, 6.
- Element D (Z=17): Electronic configuration is 2, 8, 7.

2. **Evaluate Statement I:**
- Statement: "The element C will gain electron more easily than element D."
- Analysis: Element C has 6 valence electrons and needs 2 more to complete its octet, while element D has 7 valence electrons and needs only 1 more to complete its octet. Since D can gain an electron more easily, this statement is **false**.

3. **Evaluate Statement II:**
- Statement: "The element B tends to lose electron more readily than C."
- Analysis: Element B has 2 valence electrons and can lose them easily to achieve a stable configuration. Element C, with 6 valence electrons, would find it more difficult to lose 6 electrons. Therefore, this statement is **true**.

4. **Evaluate Statement III:**
- Statement: "The oxide of A will be least basic while that of D will be most basic."
- Analysis: Element A (a metal) will form a basic oxide, while element D (a non-metal) will form an acidic oxide. Therefore, the oxide of A will be more basic than that of D, making this statement **false**.

5. **Evaluate Statement IV:**
- Statement: "The energy required to remove an electron from outermost shell from A will be minimum while that from D will be maximum."
- Analysis: Element A has only 1 valence electron, which can be removed easily, thus requiring less energy. Element D has 7 valence electrons, which are more tightly held due to higher nuclear charge, requiring more energy to remove. This statement is **true**.

### Summary of Statements:
- **Statement I:** False
- **Statement II:** True
- **Statement III:** False
- **Statement IV:** True

### Correct Statements:
The correct statements are II and IV.