Atomic radius of Ag is similar to

Options

A. Ni
B. Au
C. Cu
D. Hg

Answer

To determine which element has an atomic radius similar to that of silver (Ag), we can follow these steps:

### Step 1: Identify the position of Silver (Ag) in the periodic table.
- Silver (Ag) is located in the 5th period and is part of group 11 of the periodic table.

### Step 2: List the given options and their positions.
- The options provided are Nickel (Ni), Gold (Au), Copper (Cu), and Mercury (Hg).
- Nickel (Ni) is in the 4th period, Copper (Cu) is in the 4th period, Gold (Au) is in the 6th period, and Mercury (Hg) is in the 6th period.

### Step 3: Analyze the periodic trends.
- Atomic radius generally increases down a group and decreases across a period from left to right due to increased nuclear charge.
- Elements in the same group or period can have similar atomic radii.

### Step 4: Consider the effect of lanthanide contraction.
- Lanthanide contraction refers to the phenomenon where the atomic and ionic radii of the lanthanide series elements decrease with increasing atomic number.
- This contraction affects the elements in the 5th and 6th periods, particularly those in the d-block.

### Step 5: Compare the atomic radii of the elements.
- Silver (Ag) is directly above Gold (Au) in the periodic table, and due to lanthanide contraction, the atomic radius of Ag is similar to that of Au.
- The atomic radius of Ag is not similar to that of Ni, Cu, or Hg due to their positions in the periodic table and the effects of electron shielding.

### Conclusion:
- The atomic radius of Ag is most similar to that of Gold (Au).

### Final Answer:
- The atomic radius of Ag is similar to Au.

---