Praxis 5005 Practice Question
On the periodic table, elements in the same row are characterized by:
Correct Answer: C
Rationale: Elements in the same row of the periodic table, known as a period, have an increasing number of protons from left to right. This is because each successive element has one more proton than the one before it, which defines its atomic number.
Option A is incorrect, as the number of neutrons does not consistently increase in the same manner across a period; it varies depending on the isotope of the element. Option B is also wrong for the same reason; the neutron count does not decrease systematically across a row. Option D is incorrect since the number of protons, which determines the element's identity, increases, not decreases, from left to right.
Unlock All Questions
Subscribe to Premium for full access to all practice questions, detailed rationales, and performance tracking.
Subscribe Now