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10th Mizoram Board
IMPORTANT
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Why do you think the noble gases are placed in a separate group?

Important Questions on Periodic Classification of Elements

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10th Mizoram Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS X>Chapter 5 - Periodic Classification of Elements>QUESTIONS>Q 1
How could the Modern Periodic Table remove various anomalies of Mendeleev’s Periodic Table?
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10th Mizoram Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS X>Chapter 5 - Periodic Classification of Elements>QUESTIONS>Q 2
Name two elements you would expect to show chemical reactions similar to magnesium. What is the basis for your choice?
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10th Mizoram Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS X>Chapter 5 - Periodic Classification of Elements>QUESTIONS>Q 3
Name(in increasing atomic mass):
(a) Three elements that have a single electron in their outermost shells.
(b) Two elements that have two electrons in their outermost shells.
(c) Three elements with filled outermost shells.
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10th Mizoram Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS X>Chapter 5 - Periodic Classification of Elements>QUESTIONS>Q 4
Lithium, sodium and potassium are all metals that react with water to liberate hydrogen gas. Is there any similarity in the atoms of these elements?
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10th Mizoram Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS X>Chapter 5 - Periodic Classification of Elements>QUESTIONS>Q 4
Helium is an unreactive gas and neon is a gas of extremely low reactivity. What, if anything, do their atoms have in common?
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10th Mizoram Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS X>Chapter 5 - Periodic Classification of Elements>QUESTIONS>Q 5
In the Modern Periodic Table, which are the metals among the first ten elements?
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10th Mizoram Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS X>Chapter 5 - Periodic Classification of Elements>QUESTIONS>Q 6
By considering their position in the Periodic Table, which one of the following elements would you expect to have maximum metallic characteristic?
Ga   Ge   As   Se   Be
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10th Mizoram Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS X>Chapter 5 - Periodic Classification of Elements>EXERCISES>Q 1

Which of the following statements is not a correct statement about the trends when going from left to right across the periods of Periodic Table.