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Ar-2, 8,8 The given element argon does...

Ar-2, 8,8
The given element argon does not take part in chemical reactions.
a) Which among the following elements undergo chemical reactions forming compounds? Given reason.
(i) Ca-2,8,8,2 (ii) Ne-2,8 (iii) Kr- 2,8,18,8(iv) S-2,8,6
b) The attractive force that holds together the atoms in a molecule is known as ..........

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a) Ca- 2,8,8,2 , S- 2,8,6
Calcium and sulphur do not have 8 electrons in their outermost shells.
b) CHEMICAL BONDING
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  9. Most electronegative element is …........ (Fluorine, Carbon, Argon, ...

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  10. Why do atoms take part in CHEMICAL BONDING?

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  11. The bonding in chlorine molecule is ….............

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  12. Atomic number of element A is 12 and that of B is 8. (Symbols are not ...

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  13. The chemical formular of magnesium chloride is 'MgCl2' a) Write down...

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  14. Magensium fluoride is an ionic compound (Atomic number: Mg-12, F-9) ...

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  15. Magnesium combines with oxygen to form magnesium oxide (Atomic numbe...

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  16. The electron dot diagram representing the formation of oxygen molecule...

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  17. Examine the dot diagram of sodium oxide. a) What are the valencies o...

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