Question

In Newland’s law of octaves, the first element is ____ and the last known element is ____.?

• A. hydrogen, lanthanum
• B. hydrogen, thorium
• C. hydrogen, zirconium
• D. helium, zirconium

Answer 1

Answer:

B. hydrogen, thorium

According to Newland's law of octaves, the first element is hydrogen, and the last element known during his time was thorium. According to Newland's law of octaves, when the elements are arranged in the increasing atomic number then the properties of the eight elements will show similarity with the first element starting from any element