Name the element having the simplest atomic structure in the periodic table.

Name the element that shows simplest emission spectrum.

Write the atomic number.of the element in the third period and seventeenth group of the periodic table.

Study the below given periodic table in which four elements are indicated by alphabets A,B,C and D Which element is a metalloid?Name this elemnt and also mention the metalloids in modern periodic table

The element having atomic number 92

Write a short note on: Structure of the Modern periodic table

Write the answers of the question with refernce to the structure of the periodic table. Which elements are present near the zig zag line?

Write the answers of the question with refernce to the structure of the periodic table. which points are considered for the arrangement of the Modern period table?

Write the answers of the question with reference to the structure of the periodic table. How are blocks indicated?

Which is the first element in the periodic table ?

Answer the following questions: Write the answers of the questions with reference to the structural of the periodic table. Which elements are present near the zig-zag line?