Question

what appears to be the tre... us as you move from left to right in a period?
increasing
decreasing
remains the same

Explanation:

Assuming the question is about atomic radius (a common trend in periods of the periodic table), as you move from left to right in a period, the atomic radius generally shows a decreasing trend? Wait, no—wait, actually, for effective nuclear charge and atomic radius: when moving left to right in a period, the number of protons increases, pulling electrons closer, so atomic radius decreases? But wait, maybe the question was about something else? Wait, no, maybe the original question was about ionization energy or atomic radius. Wait, but the options are increasing, decreasing, remains same. Wait, if it's atomic radius: left to right in a period, atomic radius decreases? But wait, no—wait, maybe the question was about something else. Wait, maybe the intended trend is for atomic radius? Wait, no, let's correct: In a period (row) of the periodic table, as you move from left to right, the atomic radius generally decreases (because the number of protons increases, effective nuclear charge increases, pulling electrons closer). But wait, maybe the question was about another property? Wait, but the options are there. Wait, maybe the question was about atomic radius? But let's check again. Wait, maybe the original question was about "atomic radius" or "ionization energy". Wait, ionization energy increases left to right. But the options: if the question is about atomic radius, then decreasing. But wait, maybe the user's question was cut off, but from the options, if we assume it's atomic radius (a common periodic trend), moving left to right in a period, atomic radius decreases. But wait, maybe I made a mistake. Wait, no—let's recall: Periodic trends: atomic radius decreases across a period (left to right) because electrons are added to the same energy level, and protons increase, so effective nuclear charge increases, pulling electrons closer. So the trend for atomic radius is decreasing. But wait, the options are "increasing", "decreasing", "remains the same". So the correct answer would be "decreasing"? Wait, but maybe the question was about something else. Wait, maybe the original question was about "atomic radius" or "electronegativity" (electronegativity increases left to right). But the options: if it's atomic radius, then decreasing. If it's electronegativity, increasing. Wait, the question is cut off, but the options are there. Let's assume the most common trend: atomic radius. So moving left to right in a period, atomic radius decreases. So the answer is "decreasing".

Answer:

decreasing