During a chemical reaction, atomic number _________.

Correct option is B

The correct answer is (b) Remains the same.
· During a chemical reaction, the atomic number of an element remains unchanged. The atomic number represents the number of protons in the nucleus of an atom, which defines the element. Chemical reactions involve the rearrangement of electrons, not changes in the atomic number.
Information Booster:
· Atomic number: The number of protons in the nucleus of an atom, which remains constant during chemical reactions.
· Chemical reaction: A process that involves the breaking and forming of chemical bonds but does not affect the nuclei of atoms.
Additional Information:
· While the atomic number remains constant, the atomic mass might change in nuclear reactions, but not in ordinary chemical reactions.