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An element is placed in 2^("nd") group a...

An element is placed in `2^("nd")` group and `3^("rd")` period of the periodic table, burns is presence of xygen of form a basic oxide
(a) Identify the element
(b) Write the electronic configuration
(c) Write a balanced equation when it burns in the presence of air
(d) Write a balanced when this oxide is dissolved in water
(e) Draw the electron dot structure for the formation of this oxide.

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(a) Magnesium (Mg)
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VK GLOBAL PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS -LONG ANSWER QUESTIONS
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  2. What is the valency of magnesium with atomic number 12 and sulphur wit...

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  3. How does the valency vary in a period on going from left to right?

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  4. How does the valency vary in going down a group?

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  5. An element is placed in 2^("nd") group and 3^("rd") period of the peri...

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  6. Atomic number of few elements are given below 10, 20, 7, 14 (a) Iden...

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  7. Mendeleev predicted the existence of certain elements not known at tha...

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  9. An element X of group 15 exists as diatomic molecule and combines with...

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  10. Give an account of the process adopted by Mendeleev for the classifica...

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  11. The atomic number of an element ‘X' is 19. (a) Write its electron...

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  12. (a) How does the atomic radius change as you go (i) from left to righ...

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  13. (a) How would the tendency to lose electrons change as you go (i) fro...

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  14. The position of eight elements in the Modern Periodic Table is given b...

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  15. Atoms of eight elements A, B, C, D, E, F, G and H have the same number...

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