What element has mass number of 34 and atomic number 16?

Answer 1

Several elements have known isotopes with mass number 34:

34Ne - an isotope of neon with half-life >1.5 µs

34Na - an isotope of sodium with half-life 5.5 ms

34Mg - an isotope of magnesium with half-life 20 ms

34Al - an isotope of aluminum with half-life 56.3 ms

34Si - an isotope of silicon with half-life 2.77 s

34P - an isotope of phosphorous with half-life 12.43 s

34S - a stable isotope of sulfur

34Cl - an isotope of chlorine with half-life 1.5264 s

34Ar - an isotope of argon with half-life 844.5 ms

34K - an isotope of potassium with half life <40 ns

34Ca - an isotope of calcium with half life <35 ns

Because sulfur has several stable isotopes with 32S being by far the most common, the average mass is about 32.065

32S naturally occurring mole fraction range 0.94454-0.95281

33S naturally occurring mole fraction range 0.00730-0.00793

34S naturally occurring mole fraction range 0.03976-0.04734

36S naturally occurring mole fraction range 1.3×10−4-2.7×10−4

Answer 2

One of the isotopes of sulphur, 34-sulphur, which accounts for about a third of the element.

Answer 3

Th isotope of sulfur known as sulfur-34.

Answer 4

Selenium