What type of compounds are formed by s-block elements ?

Explanation

### Step-by-Step Solution:

1. **Understanding S-Block Elements**:
- S-block elements are found in Group 1 (alkali metals) and Group 2 (alkaline earth metals) of the periodic table. They include elements like lithium (Li), sodium (Na), potassium (K), magnesium (Mg), calcium (Ca), etc.

2. **Tendency to Lose Electrons**:
- S-block elements have a strong tendency to lose their valence shell electrons. This is because they have one or two electrons in their outermost shell, which they can easily lose to achieve a stable electronic configuration similar to that of the nearest noble gas.

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