Question

using the periodic table, which statement is correct?
a iron (fe) has more protons than silver (ag).
b hydrogen (h) has more protons than helium (he).
c oxygen (o) has more protons than chlorine (cl).
d sodium (na) has more protons than carbon (c).

Explanation:

Step1: Recall atomic number = number of protons

The atomic number of an element is equal to the number of protons in its nucleus.

Step2: Find atomic numbers of elements

• Iron (Fe) has an atomic number of 26. Silver (Ag) has an atomic number of 47. So, Fe has fewer protons than Ag.
• Hydrogen (H) has an atomic number of 1. Helium (He) has an atomic number of 2. So, H has fewer protons than He.
• Oxygen (O) has an atomic number of 8. Chlorine (Cl) has an atomic number of 17. So, O has fewer protons than Cl.
• Sodium (Na) has an atomic number of 11. Carbon (C) has an atomic number of 6. So, Na has more protons than C.

Answer:

D. Sodium (Na) has more protons than carbon (C).