Question

if we have a sample of silicon (si) atoms that has 14 protons, 14 electrons, and 18 neutrons
what is the name of this specific silicon isotope?
○ silicon-14
○ silicon-32
○ silicon-46
○ silicon-153

Explanation:

Step1: Recall isotope naming

The mass number of an isotope is the sum of protons and neutrons. For silicon, protons = 14, neutrons = 18.

Step2: Calculate mass number

Mass number = protons + neutrons = \( 14 + 18 = 32 \). So the isotope is silicon - 32.

Answer:

B. silicon - 32