An element with atomic number 48 (Z = 48) of the periodic table will 

Options

A. belong to p-block.
B. be placed in group number 12.
C. be called a transition element.
D. have twenty electrons with l = 2.

Answer

To solve the question regarding the element with atomic number 48, we can follow these steps:

### Step 1: Identify the Element
The atomic number (Z) of an element indicates the number of protons in its nucleus, which also equals the number of electrons in a neutral atom. For atomic number 48, we can look up the periodic table to find the corresponding element.

**Hint:** The periodic table is organized by increasing atomic number, so you can find the element by looking for the number 48.

### Step 2: Determine the Element Name
The element with atomic number 48 is Cadmium (Cd).

**Hint:** Remember that each element has a unique symbol, and for atomic number 48, the symbol is "Cd".

### Step 3: Understand the Properties of Cadmium
Cadmium is a transition metal located in group 12 of the periodic table. It is known for its properties such as being a good conductor of electricity, having a relatively low melting point, and being used in batteries and coatings.

**Hint:** Transition metals often have unique properties that distinguish them from other groups in the periodic table.

### Step 4: Consider the Electron Configuration
The electron configuration of Cadmium (Z = 48) can be written as [Kr] 4d^10 5s^2. This shows that Cadmium has a full d-subshell and two electrons in the s-subshell of the fifth energy level.

**Hint:** The electron configuration can help you understand the chemical behavior and bonding characteristics of the element.

### Step 5: Recognize the Common Uses of Cadmium
Cadmium is commonly used in rechargeable nickel-cadmium batteries, as well as in pigments, coatings, and as a stabilizer in plastics.

**Hint:** Knowing the applications of an element can provide insight into its importance in various industries.

### Summary
The element with atomic number 48 is Cadmium (Cd), which is a transition metal with the electron configuration [Kr] 4d^10 5s^2. It has various applications, particularly in batteries and coatings.