An element having electronic configuration `[Xe]6s^(1)` will:

Options

A. Form basic oxide
B. Can be used in photolectric cell
C. Has high ionisation enthalpy
D. Both 1 and 2

Explanation

To solve the question regarding the element with the electronic configuration `[Xe]6s^(1)`, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Element**:
- The given electronic configuration is `[Xe]6s^(1)`. This indicates that the element has one electron in the outermost s-orbital (6s).
- The presence of an outer electron in the s-orbital suggests that this element belongs to the alkali metals, which are characterized by having a general electronic configuration of `ns^(1)`.

**Hint**: Look for the group of elements that have a single electron in their outermost shell.

2. **Determine the Period**:
- The principal quantum number (n) is 6, indicating that this element is in the 6th period of the periodic table.
- Alkali metals in the 6th period include Cesium (Cs).

**Hint**: The principal quantum number helps in identifying the period of the element.

3. **Identify the Properties of Alkali Metals**:
- Alkali metals are known for being highly electropositive and typically form basic oxides.
- They react vigorously with water to form hydroxides, which are strong bases.

**Hint**: Recall the general properties of alkali metals, especially their reactivity and the type of oxides they form.

4. **Basic Oxide Formation**:
- Since Cesium is an alkali metal, it will react with oxygen to form a basic oxide (Cs2O).
- The basic nature of the oxide is due to the low ionization enthalpy of alkali metals, which decreases down the group.

**Hint**: Consider the nature of oxides formed by metals in the same group.

5. **Evaluate the Options**:
- Based on the properties discussed, we can conclude that the element will form a basic oxide and is used in applications such as photoelectric cells.
- Therefore, the correct options related to the properties of the element with the configuration `[Xe]6s^(1)` would be that it forms basic oxides and is used in photoelectric cells.

**Hint**: Check the options provided in the question to find the correct statements about the element.

### Final Answer:
The element with the electronic configuration `[Xe]6s^(1)` is Cesium (Cs), and it will form a basic oxide and is used in photoelectric cells. Thus, the correct options are both 1 and 2.