Question

station 1
understanding the periodic table
which of the following lists show the elements in order, from those having the least protons to those having the most protons in the atoms?
a. k, mg, n, o
b. c, al, p, cl
c. li, be, h, he
d. na, ne, he, h
q1

Explanation:

Step1: Recall proton - atomic number relation

The number of protons in an atom is equal to its atomic number.

Step2: Find atomic numbers

For carbon (C), atomic number = 6; aluminum (Al), atomic number = 13; phosphorus (P), atomic number = 15; chlorine (Cl), atomic number = 17. This list has elements in increasing order of atomic number (and thus number of protons).

Step3: Check other options

In option A, potassium (K) has a high atomic number compared to nitrogen (N) and oxygen (O), so it's not in increasing order. In option C, hydrogen (H) has the lowest atomic number but is not in the correct order. In option D, neon (Ne) has a higher atomic number than hydrogen (H) and helium (He) and is not in increasing order.

Answer:

B. C, Al, P, Cl