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Which of the following can be represented by the configuration [Kr]5s2?

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Important Questions on Elements of Group 1 and Group 2

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Chemistry Crash Course MHT-CET>Chapter 8 - Elements of Group 1 and Group 2>Exercise 1>Q 12
BeH2 is prepared by reducing BeCl2 with _________
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Chemistry Crash Course MHT-CET>Chapter 8 - Elements of Group 1 and Group 2>Exercise 1>Q 13
Oxides and hydroxides of alkaline earth metals except beryllium are of nature.
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Chemistry Crash Course MHT-CET>Chapter 8 - Elements of Group 1 and Group 2>Exercise 1>Q 14
Be2C is called acetylide because it reacts with water yielding ethyne.
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Chemistry Crash Course MHT-CET>Chapter 8 - Elements of Group 1 and Group 2>Exercise 1>Q 15
A metal 'M' forms water-soluble sulfate and water-insoluble hydroxide MOH2. Its oxide MO is amphoteric and possesses a high melting point. The metal M is
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Chemistry Crash Course MHT-CET>Chapter 8 - Elements of Group 1 and Group 2>Exercise 1>Q 16
Identify the incorrect statement regarding beryllium.
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Chemistry Crash Course MHT-CET>Chapter 8 - Elements of Group 1 and Group 2>Exercise 1>Q 17
Which of the following pair of elements do not show diagonal relationship? 
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Chemistry Crash Course MHT-CET>Chapter 8 - Elements of Group 1 and Group 2>Exercise 1>Q 18
The similarities between an element of a group and the element placed in the next period of the succeeding group is called:
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Chemistry Crash Course MHT-CET>Chapter 8 - Elements of Group 1 and Group 2>Exercise 1>Q 19
Chloride of metal Y was found to be deliquescent and on crystallisation formed a hydrate. The metal Y is ________.