Final answer:
The correct list of elements arranged in order of increasing atomic number from the given options is B) F, Cl, Br, I, as they are halogens listed in the correct order corresponding to their positions on the periodic table.
Step-by-step explanation:
The question asks which list of elements is arranged in order of increasing atomic number. The atomic number is the number of protons in the nucleus of an atom, and this number increases from left to right across a period on the periodic table.
Let's evaluate the given options:
- A) Sc (Atomic number 21), V (Atomic number 23), Ti (Atomic number 22), Cr (Atomic number 24) - Incorrect, as Titanium (Ti) should come before Vanadium (V).
- B) F (Atomic number 9), Cl (Atomic number 17), Br (Atomic number 35), I (Atomic number 53) - Correct, these halogens are listed in order of increasing atomic number.
- C) Sr (Atomic number 38), Ca (Atomic number 20), Mg (Atomic number 12), Be (Atomic number 4) - Incorrect, Beryllium (Be) has the lowest atomic number and should be listed first.
- D) B (Atomic number 5), C (Atomic number 6), Li (Atomic number 3), Be (Atomic number 4) - Incorrect, as Lithium (Li) should come before Beryllium (Be) and both should be before Boron (B).
The correct answer is B) F, Cl, Br, I - these elements are listed in the correct order of increasing atomic number.