Question

1-What is the modern periodic table?

2-Compare and contrast the periods and groups of the modern periodic table.

3-In the modern periodic table shown in Figure 1 above, find the element named lead (Pb). How many protons do atoms of lead have? To which class of elements does lead belong?

4-Which groups of the modern periodic table contain elements that are classified as metalloids?
​

Answer 1

Answer:modern periodic table is the periodic table usedat the latest time it is organized by Henry Moseley the table has 7 perods and 18 groups