CHAPTER 4 THE PERIODIC TABLE OF ELEMENTS

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4.3 ELEMENTS IN GROUP 18

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I AM IZZAH

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CHAPTER 4 THE PERIODIC TABLE OF ELEMENTS


Froggy Jumps CHAPTER 4 THE PERIODIC TABLE OF ELEMENTSVersion en ligne 4.3 ELEMENTS IN GROUP 18 par I AM IZZAH 1 Which element in Group 18 does NOT have an octet electron arrangement? a Neon b Argon c Helium 2 Why are Group 18 elements chemically unreactive? a They have high density b They have achieved a stable duplet or octet electron arrangement c They are monatomic gases. 3 Which of the following trends occurs when going down Group 18? a Atomic size decreases b Melting and boiling points increase c Reactivity increases 4 Which element is used in cancer treatment as a source of gamma rays? a Xenon b Krypton c Radon 5 A scientist needs a gas to protect hot tungsten filament in a light bulb. Which gas is the best choice? a Oxygen b Nitrogen c Argon 6 Why does xenon react more easily than helium? a Xenon atoms are smaller. b Xenon's outer electrons are further from the nucleus and easier to remove. c Xenon has stronger nuclear attraction. 7 The melting point of noble gases increases down the group because a van der Waals forces become stronger. b the atoms become smaller. c metallic bonding becomes stronger. 8 Which physical property increases down Group 18? a Boiling point b Reactivity c Solubility in water 9 Why are noble gases chemically unreactive? a They have one valence electron. b They have a complete outermost electron shell. c They easily lose electrons. 10 Why are noble gases usually found as single atoms? a They have incomplete electron shells. b They are chemically stable and do not need to bond. c They form strong covalent bonds.

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CHAPTER 4 THE PERIODIC TABLE OF ELEMENTS

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CHAPTER 4 THE PERIODIC TABLE OF ELEMENTSVersion en ligne

par I AM IZZAH

Which element in Group 18 does NOT have an octet electron arrangement?

Why are Group 18 elements chemically unreactive?

Which of the following trends occurs when going down Group 18?

Which element is used in cancer treatment as a source of gamma rays?

A scientist needs a gas to protect hot tungsten filament in a light bulb. Which gas is the best choice?

Why does xenon react more easily than helium?

The melting point of noble gases increases down the group because

Which physical property increases down Group 18?

Why are noble gases chemically unreactive?

Why are noble gases usually found as single atoms?