Question

Figure 5-1 shows a portion of a blank periodic table. Identify the segments labeled A and B. Question 18 options: A is a group and B is a period. A is a period and B is a group. A and B are both periods. A and B are both groups.

Answer 1

A is a period and B is a group

Answer 2

A is a period and B is a group

Step-by-step explanation:

The given figure shows a portion of a blank periodic table. We have to identify the segments labeled A and B.

A = period

B = group

Period is defined as the horizontal row of the periodic table. It relates the number of shells of an atom of the given element. All element of a period have same number of atomic orbitals. Group is defined as the vertical row of the periodic table. It relates the number of valance electrons of an element.

Hence, the correct option is (b) "A is a period and B is a group".