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Why do elements in any given group have ...

Why do elements in any given group have similar properties?

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The chemical properties of an atom are largely determined by its valence electrons. In a given group, the number of valence electrons are same, hence they have similar properties.
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Explore conceptually related problems

(a) Explain why the first period of the modern periodic table has only two elements whereas second period has eight elements (b) Why do elements in the same group show similar properties but the elements in different groups show different properties? (c) For each of the following triads, name the element with the characteristics specified below: (d) State on reason for keeping fluorine and chlorine in the same group of the periodic table. (e) What are the merits of the moderns periodic table of elements?

What is periodicity in properties of elements with reference to the Modern Periodic Table ? Why do all the elements of the same group have similar properties? How does the tendency of elements to gain electrons change as we move from left to right in a period ? State the reason of this change.

Elements beloging to the same group have similar properties because

In the modern periodic table, the elements are arranged in the increasing order of their atomic number. This arrangement is based on the modern periodic law, which states that the properties of elements are a periodic function of their atomic numbers. In the modern periodic table, each column is called a group and each row is called a period. Elements within the same group show similarity and gradation in properties. This is due to the same number of electroms in the outermost shell . Based on the above paragraph, answer the following question: Which pair of elements do you think will have similar properties? a. Sodium and Argon b. Sodium and Potassium c. Potassium and Neon

(a) Explain why: (i) All the elements of a group have similar chemical properties. (ii) All the elements of a period have different chemical properties. (b) The atomic radii of three elements X,Y and Z of a period of the periodic table are 186 pm, 104 pm and 143 pm respectively. Giving reason arrange these elements in the increasing order of atomic numbers in the period.

Why do elements present in a group show similar characteristics after definite gaps of atomic numbers 8, 8, 18, 18, 18, 32 ?

VK GLOBAL PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS -SHORT ANSWER QUESTIONS-I
  1. State Periodic Law on which the Modern Periodic Table is based.

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  2. What do you understand by the term periodicity? Does the periodicity i...

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  3. What does each group in the Periodic Table signify?

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  4. Why do elements in any given group have similar properties?

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  5. Why do group 1 elements form unipositive ions?

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  6. Why are the elements of group 18 called zero valent?

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  7. Why group 17 elements form uninegative anions?

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  8. Would you place the two isotopes of chlorine, Cl-35 and Cl-37 in diffe...

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  9. How does the metallic character change along the period?

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  10. What is atomic radius? Why does atomic radius decrease across a period...

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  11. Why does the size of the atom increase down the group?

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  12. Can the following groups of elements be classified as Dobereiner's tri...

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  13. Write the formulae of chlorides of Eka-Silicon and Eka-aluminium, the ...

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  14. If an element X is placed in group 14, what will be the formula and th...

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  15. Arrangement the following elements in increasing order of their atomic...

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  16. Identify and name the metal out of the following elements whose electr...

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  17. Arrange the following elements in the increasing order of their metall...

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  18. Which group of elements could be placed in mendeleev's periodic table ...

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  19. (i) Why do we classify elements? (ii) In Mendeleev's Periodic Tabl...

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  20. Explain why sodium is more reactive than lithium.

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