Chemical Properties of Elements Quiz
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Questions and Answers

What makes hydrogen unique?

It consists of just one proton and one electron.

Why are alkali metals ready to lose their one electron?

They have only one electron in their outer shell.

Which are the most reactive elements in the alkali metals group?

Cesium and francium.

What makes the transition elements unique?

<p>Their valence electrons are present in more than one shell.</p> Signup and view all the answers

Why are the alkaline earth elements very reactive?

<p>All alkaline earth elements have an oxidation number of +2.</p> Signup and view all the answers

What are the oxidation numbers of the non-metals?

<p>+4, -4, -3, and -2</p> Signup and view all the answers

What distinguishes metalloids from non-metals?

<p>Metalloids have properties of both metals and non-metals.</p> Signup and view all the answers

What is the meaning of the term 'halogen'?

<p>The term 'halogen' means 'salt-former'.</p> Signup and view all the answers

What is the maximum number of electrons in the outer shell of noble gases?

<p>2 for Helium, 8 for all others</p> Signup and view all the answers

What elements are associated with silicate minerals like olivine, pyroxene, amphibole, plagioclase, the micas, and quartz?

<p>Oxygen, silicon, aluminum, calcium, potassium, and sodium</p> Signup and view all the answers

Flashcards

What makes hydrogen unique?

Hydrogen is the simplest element, consisting of only one proton and one electron in its structure.

Why do alkali metals readily lose electrons?

Alkali metals, located in Group 1 of the periodic table, easily lose their single outer shell electron due to its weak attraction to the nucleus.

Which alkali metals are the most reactive?

Cesium (Cs) and Francium (Fr), located at the bottom of Group 1, are the most reactive alkali metals due to their large atomic size and weakly bound outer electrons.

What makes transition elements unique?

Transition elements, found in the middle of the periodic table, have their valence electrons spread out across multiple electron shells, contributing to their complex and diverse chemical properties.

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Why are alkaline earth metals reactive?

Alkaline earth metals, found in Group 2, have a +2 oxidation state because they readily lose their two outer shell electrons to achieve a stable noble gas configuration.

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What are the oxidation numbers of non-metals?

Non-metals exhibit a range of oxidation numbers, including +4, -4, -3, and -2, depending on the element and its bonding environment.

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What distinguishes metalloids from non-metals?

Metalloids, also known as semi-metals, share properties of both metals and non-metals. They can conduct electricity under certain conditions but lack the malleability and ductility of metals.

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What does the term 'halogen' mean?

The term 'halogen' comes from the Greek words 'hals' meaning 'salt' and 'gen' meaning 'to form,' indicating their ability to react with metals to produce salts.

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What is the maximum number of electrons in the outer shell of noble gases?

Noble gases, except for Helium, have a maximum of 8 electrons in their outermost shell, leading to their exceptional stability and lack of reactivity.

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Which elements are part of common silicate minerals?

Common silicate minerals, such as olivine, pyroxene, amphibole, plagioclase, micas, and quartz, contain combinations of oxygen, silicon, aluminum, calcium, potassium, and sodium.

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