Question

9 multiple choice 1 point how many neutrons are in sulfur - 34? helium 2 he 4.0026 boron 5 b 10.811 carbon 6 c 12.011 nitrogen 7 n 14.007 oxygen 8 o 15.999 fluorine 9 f 18.998 neon 10 ne 20.180 aluminum 13 al 26.982 silicon 14 si 28.086 phosphorus 15 p 30.974 sulfur 16 s 32.065 chlorine 17 cl 35.453 argon 18 ar 39.948 18 34 16 20

Explanation:

Step1: Identify atomic number of sulfur

From the periodic - table, the atomic number of sulfur (S) is 16. The atomic number (Z) is the number of protons in the nucleus of an atom.

Step2: Recall the relationship between mass number and neutrons

The mass number (A) of an isotope is the sum of the number of protons and neutrons in the nucleus. For sulfur - 34, the mass number A = 34. The formula to find the number of neutrons (N) is N=A - Z.

Step3: Calculate the number of neutrons

Substitute A = 34 and Z = 16 into the formula N=A - Z. So, N=34 - 16 = 18.

Answer:

18