Sulfur-35 (³⁵S) undergoes beta decay to form chlorine-35 (³⁵Cl). Here's the nuclear decay equation:

³⁵S → ³⁵Cl + e⁻ + νe

Here's what each part of the equation represents:

* ³⁵S: The parent nucleus, sulfur-35.

* ³⁵Cl: The daughter nucleus, chlorine-35.

* e⁻: An electron, also known as a beta particle.

* νe: An electron antineutrino.

Explanation:

During beta decay, a neutron in the nucleus of sulfur-35 transforms into a proton, releasing an electron (beta particle) and an electron antineutrino. This process changes the atomic number of the nucleus, converting sulfur (atomic number 16) into chlorine (atomic number 17) while maintaining the mass number (35).