Question

test ii: write the name of the element located in the given group and period number below.

Explanation:

Step1: Recall periodic - table knowledge

Use the periodic - table layout where the period number is the horizontal row and the group number is the vertical column to identify elements.

Step2: Identify elements one - by - one

Look up each period and group combination in the periodic table.

Period	Group	Element
12	3	Not applicable (Periods in the periodic table are from 1 - 7)
13	5	Not applicable (Periods in the periodic table are from 1 - 7)
14	7	Not applicable (Periods in the periodic table are from 1 - 7)
15	1	Not applicable (Periods in the periodic table are from 1 - 7)
16	4	Not applicable (Periods in the periodic table are from 1 - 7)
17	2	Not applicable (Periods in the periodic table are from 1 - 7)
18	6	Not applicable (Periods in the periodic table are from 1 - 7)
19	3	Not applicable (Periods in the periodic table are from 1 - 7)
20	5	Not applicable (Periods in the periodic table are from 1 - 7)

Since the periods listed (11 - 20) are beyond the known 7 - period structure of the periodic table, all the elements for these period - group combinations cannot be determined from the standard periodic table.

Answer:

All elements cannot be determined as periods 11 - 20 are not part of the standard periodic table.