Question

station 1
understanding the periodic table
which two letters represent elements
that are in the same period?
j. (k,l)
k. (m,s)
l. (h,j)
m. (s,t)

Explanation:

Step1: Recall Periodic Table Structure

In the periodic table, a period is a horizontal row. So elements in the same period are in the same horizontal row.

Step2: Analyze Each Option

• Option J: K and L are in different vertical columns (different rows? Wait, looking at the grid, K is in an upper row, L is in a lower row? Wait no, let's check the grid. Wait, M and S: Wait, no, let's check S and T. Wait, S and T are in the same horizontal row (same period). Wait, let's re - examine. Wait, the option M is (S, T). Looking at the grid, S and T are in the same horizontal row (same period). Let's check other options:
• Option J: K and L are in different rows (K is upper, L is lower in the grid) → different periods.
• Option K: M and S are in different rows (M is upper, S is lower) → different periods.
• Option L: H and J are in different rows (H is upper, J is lower) → different periods.
• Option M: S and T are in the same horizontal row (same period).

Answer:

M. (S, T)