Interpretation:
The two elements of the periodic table which have an
Concept introduction:
All the elements have an atomic number. Periodic table is constructed in the increasing order of atomic number. The number of protons of an element represents its atomic number. Atomic mass is the sum of the number of neutrons and protons in the element.

Answer to Problem 6SSC
Two elements of the periodic table which have an atomic mass less than twice their atomic numbers are hydrogen and oxygen.
Explanation of Solution
Hydrogen:
So, atomic mass of hydrogen is less than twice of atomic number.
Oxygen
So, atomic mass of hydrogen is less than twice of atomic number.
Thus, two element hydrogen and oxygen have atomic mass less their twice of the atomic number.
Chapter 6 Solutions
Chemistry: Matter and Change
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