_______is the most reactive metal in the reactivily series .

Options

A. Lithium
B. Mercury
C. Silver
D. Gold

Answer

**Step-by-Step Solution:**

1. **Understand the Reactivity Series**: The reactivity series is a list of metals arranged in order of decreasing reactivity. The most reactive metals are placed at the top, while the least reactive metals are at the bottom.

2. **Identify the Metals in the Options**: The options given in the question are:
- A) Lithium
- B) Mercury
- C) Silver
- D) Gold

3. **Recall the Order of Reactivity**: From the reactivity series, we know the following order:
- Potassium (K)
- Sodium (Na)
- Lithium (Li)
- Calcium (Ca)
- Magnesium (Mg)
- Aluminum (Al)
- Zinc (Zn)
- Iron (Fe)
- Tin (Sn)
- Lead (Pb)
- Copper (Cu)
- Mercury (Hg)
- Silver (Ag)
- Gold (Au)

4. **Compare the Reactivity of the Given Metals**:
- Lithium is higher in the reactivity series compared to Mercury, Silver, and Gold.
- Mercury is less reactive than Lithium.
- Silver is even less reactive than Mercury.
- Gold is the least reactive among the four.

5. **Conclusion**: Based on the reactivity series, the most reactive metal among the options provided is Lithium.

**Final Answer**: Lithium is the most reactive metal in the reactivity series.

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