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chemistry 03 classification of elements
Pg.No.
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Page 1
Q.1. Who is known as father of periodic table?
Q.2. Who classified elements into metals and non-metals?
Q.3. According to which law the physical and chemical properties of the elements are the periodic function of their atomic masses?
Q.4. Horizontal lines in periodic table are known as?
Q.5. Vertical lines in periodic table are known as?
Q.6. How many periods are there in Mendeleev's periodic table?
Q.7. How many groups are there in Mendeleev's periodic table?
Q.8. Modern periodic law was given by?
Q.9. According to modern periodic law the physical and chemical properties of the elements are the periodic function of their?
Q.10. How many periods are there in modern periodic table?
Q.11. How many groups are there in modern periodic table?
Q.12. Modern periodic table is divided into?
Q.13. The s-block of periodic table contains?
Q.14. The p-block of periodic table contains?
Q.15. The d-block of periodic table contains?
Q.16. The f-block of periodic table contains?
Q.17. The distance from the center of the nucleus to the outermost shell containing electrons is known as?
Q.18. Is it possible to measure the absolute value of atomic radius?
Q.19. Atomic radius is expressed in which different forms?
Q.20. What is the descending order of atomic radii?
Q.21. The effective distance from the center of the nucleus of the ion upto which it exerts its influence on the electron cloud, is known as?
Q.22. What is the descending order sequence of anionic radii, atomic radii, cationic radii?
Q.23. The amount of energy needed to remove an electron from isolated gaseous atom is known as?
Q.24. The energy released during addition of an extra electron in isolated gaseous atom is known as?
Q.25. Which element has highest electron affinity?
Q.26. The chemical property that describes the tendency of an atom to attract a shared pair of electrons (or electron density) towards itself is known as?
Q.27. Which is the most electronegative atom?
Q.28. What is the formula for Eletronegativity (En)?
Q.29. Ionic compounds have electronegativity?
Q.30. Polar covalent compounds have electronegativity?
Q.31. Non polar compounds have electronegativity?
Q.32. The amount of energy released during formation of one mole of ionic compound from its constituent ions is known as?
Q.33. The amount of energy released during dissolution of one mole of compound into water is known as?
Q.34. A compound is soluble in water if?
Q.35. A compound is insoluble in water if?
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