Question

1. label:

image of molybdenums element box with labels e, a, a, a pointing to different parts (name, atomic number, symbol, atomic mass)

Explanation:

Each part of the periodic table element block corresponds to a specific identifier:

1. The full name of the element is at the top.
2. The whole number is the atomic number (number of protons).
3. The one/two-letter symbol is the element symbol.
4. The decimal number is the average atomic mass.

Answer:

• e: Element Name
• a (pointing to 42): Atomic Number
• a (pointing to Mo): Element Symbol
• A (pointing to 95.94): Average Atomic Mass