The following is a periodic table below

All the letters are in squares

The S = an empty square

13 Colums in total

Questions:

1. What pair of elements is in the same period? D and R

2. Which pair of elemetns is in the same family? K and F

3. Which element has the smallest atomic number K

4. Whcih element would be classified as metals D, R & F

are these correct

K S

S S S S J S S

F S S S S S S

S S S D S S R S S S S S S

correct

To answer these questions, we can use the periodic table provided. Let's go through each question one by one:

1. What pair of elements is in the same period?
To determine the period, we need to count the number of rows an element is from the top of the periodic table. From the given layout, we can see that element D and element R are both in the same row, which means they are in the same period. Therefore, your answer of "D and R" is correct.

2. Which pair of elements is in the same family?
To determine the family, we need to look for elements that are in the same column. Counting the number of columns is given as 13. From the layout provided, we can identify that element K and element F are both in the same column, which means they are in the same family. Therefore, your answer of "K and F" is correct.

3. Which element has the smallest atomic number?
The atomic number represents the number of protons in an element's nucleus. From the layout provided, we can see that the element K has the smallest atomic number among all the visible elements. Therefore, your answer of "K" is correct.

4. Which element would be classified as metals?
Metals are typically found on the left and in the middle of the periodic table. Looking at the layout, we can see that elements D, R, and F are in the left portion of the periodic table, which suggests that they would be classified as metals. Therefore, your answer of "D, R & F" is correct.

In conclusion, your answers to all four questions are correct.