Question

*Identify the odd element from the group.*

1️⃣ Sodium
2️⃣ Thorium
3️⃣ Uranium
4️⃣ Radium​

Answer 1

Sodium is the odd element from the group.

• The elements Thorium, Uranium, and Radium have are radioactive in nature.
• Thorium has an atomic number 90 and its mass is 232u. It is a weak radioactive element.
• Uranium with an atomic number 92 and mass 238u is a naturally occurring mild radioactive element.
• Radium, with atomic number 88 and mass of 226 u is highly radioactive in nature.
• Sodium, has an atomic number 11 and mass of 23 u and is not a radioactive element, so it is an odd one out.

Answer 2

Answer:

odd elements from the group