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the electronic configurations of four pa...

the electronic configurations of four particles A,B,C and D are given below:
A 2,8,8
B 2,8,2
C 2,6
D 2,8
Which electronic configurations represents:
(i) magnesium atom?
(ii) oxygen atom?
(iii) sodium ion?
(iv). chloride ion?

Text Solution

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(i) B
(ii) C
(iii) D ltBrgt (iv) A
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LAKHMIR SINGH & MANJIT KAUR-METALS AND NON-METALS-Exercise
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  2. The electronic configurations of three elements A, B, and C are as fol...

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  3. the electronic configurations of four particles A,B,C and D are given ...

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  4. The atomic number of an element X is 12. (a). What must an atom of X...

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  5. The atomic number of an element Y is 16. (a). What must an atom of Y...

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  8. A zinc ore gave CO(2) on treatment with a dilute acid. Identify the or...

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  9. What chemical process is used for obtaining a metal from its oxide?

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  10. State two ways to prevent the rusting of iron.

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  11. What is meant by galvanisation? Why is it done?

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  12. Name the metal which is used for galvanising iron.

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  13. Explain why,iron sheets are coatedwith zinc.

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  14. Why do we apply paint on iron articles?

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  15. Give reason for the following: Carbonate and sulphide ores are usual...

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  17. Name an alloy of lead and tin.

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  18. Give the composition of an alloy called solder. State its one property...

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