Which of the following elements exist as diatomic in nature

Which of the following elements exist as diatomic in nature? Group of answer choices hydrogen nitrogen carbon iron

The correct answer and explanation is:

The correct answer is: Hydrogen and Nitrogen

Explanation (Approximately 300 words):

Some elements naturally exist as diatomic molecules, meaning they form molecules consisting of two atoms of the same element bonded together. This behavior is common among certain nonmetals because forming a diatomic molecule makes the element more stable.

The most well-known diatomic elements are:
🔹 H₂ (Hydrogen)
🔹 N₂ (Nitrogen)
🔹 O₂ (Oxygen)
🔹 F₂ (Fluorine)
🔹 Cl₂ (Chlorine)
🔹 Br₂ (Bromine)
🔹 I₂ (Iodine)

These seven elements are often remembered by the mnemonic: “Have No Fear Of Ice Cold Beer” (H, N, F, O, I, Cl, Br).

Let’s examine the elements listed in the question:

1. Hydrogen (H) – ✅
   Hydrogen exists as H₂ in its natural gaseous state. A single hydrogen atom is unstable on its own because it has only one electron and seeks to form a pair (a stable duet). Thus, two hydrogen atoms bond covalently to form a stable H₂ molecule.
2. Nitrogen (N) – ✅
   Nitrogen exists as N₂ gas in nature, making up about 78% of Earth’s atmosphere. It forms a triple bond between the two nitrogen atoms, making N₂ a very stable and unreactive molecule.
3. Carbon (C) – ❌
   Carbon does not exist as a diatomic molecule. In nature, carbon is found in several forms like graphite, diamond, or as part of compounds like CO₂. Carbon atoms typically form large networks or chains rather than diatomic molecules.
4. Iron (Fe) – ❌
   Iron is a metal, and metals do not form diatomic molecules. Iron exists as a metallic solid with atoms bonded in a crystalline lattice structure, not as Fe₂ molecules.

Final Answer: ✅ Hydrogen and Nitrogen are diatomic in nature.