Advertisements
Advertisements
प्रश्न
The scientist who propounded the modern periodic law is ______.
Advertisements
उत्तर
The scientist who propounded the modern periodic law is Dimitri Mendeleev.
APPEARS IN
संबंधित प्रश्न
Nitrogen (atomic number 7) and phosphorus (atomic number 15) belong to group 15 of the Periodic Table. Write the electronic configuration of these two elements. Which of these will be more electronegative? Why?
Write the names given to the vertical columns and horizontal rows in the Modern Periodic Table. How does the metallic character of elements vary on moving down a vertical column? How does the size of atomic radius vary on moving left to right in a horizontal row? Give reason in support of your answer in the above two cases.
Consider the following elements:
Na, Ca, Al, K, Mg, Li
Which of these elements belong to the same period of the periodic table?
What is the fundamental difference in the electron configurations between the group 1 and group 2 elements?
Give the chemical formula of ammonium sulphate
Write a scientific reason.
Lithium and sodium are included in the same group in the periodic table.
Explain structure of modern periodic table in short.
Which of the following statements about the Modern Periodic Table is correct:
Which of the following is the outermost shell for elements of period 2?
Explain giving reason why although the nuclear charge in atoms increases in moving from left to right in a period as well as in moving from top to bottom in a group in the Modern periodic table, but the size of the atoms does not vary similarly in both situations.
