Question

Statement I : An element with an atomic number of X and mass number of N has N - X neutrons.
Statement II : In periodic table, elements have more neutrons than protons.

• A. Statement I is True, Statement II is True and statement II is correct explanation of statements I
• B. Statement I is True, Statement II is True and statement II is NOT correct explanation of statements I
• C. Statement I is True, Statement II is False
• D. Statement I is False, Statement II is True
• E. Statement I is False, Statement II is False

Answer 1

Answer: (C)

Statement I is True, Statement II is False

Statement I: An element with an atomic number of X and mass number of N has N - X neutrons.
The mass number N corresponds to the total number of protons and neutrons. The atomic number X corresponds to the number of protons.
Statement II: In the periodic table, elements may or may not have more neutrons than protons.
Hydrogen with atomic number and mass number equal to 1 has 1 proton and zero neutrons.
Statement I is True, Statement II is False.