5. Periodic Classification of Elements

5. Periodic Classification of Elements

True False Science Class 10 Chapter 5 Periodic Classification of Elements

True False Science Class 10 Chapter 5 Periodic Classification of Elements Read the following statements and write your answer as true of false.: Question.1. When Mendeleev started his work, 63 elements were known. Show Answer True Question.2. Dobereiner could identify only three triads of elements. These are: Li, Na, K; Ca, Sr, Ba and Cl, …

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Fill in the Blanks Science Class 10 Chapter 5 Periodic Classification of Elements

Fill in the Blanks Science Class 10 Chapter 5 Periodic Classification of Elements Read the following statements and fill in the blanks with appropriate words: Question.1. Mendeleev predicted the existence of some yet to be discovered elements on the basis of ___________ in his Periodic Table. Show Answer Gaps Question.2. Elements in the Modern Periodic …

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