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

Non-metals in the third period .

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

Name the following: The three metals in the third period of the modern periodic table.

Draw the electronic configuration of the period 2 element of first group in the periodic table

Two elements X and Y have atomic number 12 and 16 respectively.Write the electronic configuration for these elements.To which period of the Modern periodic table do these two elements belong?

Predict the period of the element with atomic number 51

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. Draw the electronic configuration of the second row of elements of first group in the periodic table.

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