Give me two chemical elements that start with the letter "S".
Sure, here are two chemical elements that start with the letter "S": 
1. Sodium (Na)
2. Sulfur (S)
Complete the following task based on the instruction and optional input provided.### Instruction:
Give me two chemical elements that start with the letter "S".

### Output:
Sure, here are two chemical elements that start with the letter "S": 
1. Sodium (Na)
2. Sulfur (S)