Periodic Trends and Atomic Structure

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Quiz on valence, radius, and ionisation

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mmodh2

Australia

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Periodic Trends and Atomic Structure


Periodic Trends and Atomic StructureVersión en línea Quiz on valence, radius, and ionisation por mmodh2 1 What is the octet rule in simple terms? a Atoms aim for 8 electrons in their outer shell b Outer shells must have exactly 2 electrons c Atoms always lose all outer electrons d Atoms gain 10 electrons for stability 2 Why does atomic radius generally increase down a group? a Electrons are added to the same shell b Protons decrease down the group c Inner electrons shield the nucleus, reducing attraction d The nucleus increases in size down a group 3 What happens to atomic radius when an atom loses an electron to form a cation? a The nucleus shrinks out of the atom b The atom becomes neutral c Ionic radius increases dramatically d Ionic radius generally decreases 4 Valence electrons are located in which part of the atom? a Outermost electron shell b Nucleus c Protein coat (if any) d Inner core shells 5 Which statement best describes ionisation energy? a Energy required to remove an electron from an atom b Energy to add electrons to an atom c Energy released when forming a bond d Energy to change a proton into a neutron 6 What does electronegativity measure? a Energy required to ionise the atom b Ability of an atom to attract electrons in a bond c Mass of an atom d Number of neutrons in the nucleus 7 Which describes valence electrons? a Protons in the nucleus b Neutrinos emitted during reactions c Electrons in the outermost shell involved in bonding d Electrons in the inner shells 8 What happens to ionic radius when an electron is gained? a Ionic radius stays the same b Ionic radius decreases c Nucleus expands d Ionic radius increases 9 What are metals typically characterized by? a Good conductors and malleable b Poor conductors and brittle c Gaseous at room temperature only d Non-reactive and dark 10 Which statement is true about nucleus and protons? a Electrons determine the element's identity b Protons determine the element's identity c Protons have no charge d Neutrons determine identity Feedback 1 A full outer shell of 8 electrons provides stability for most elements. 2 Shielding reduces attraction, allowing outer shells to expand. 3 Losing electrons reduces electron-electron repulsion and radius. 4 Valence electrons participate in bonding and determine reactivity. 5 First ionisation energy targets the highest energy electron, usually a valence electron. 6 Electronegativity indicates bonding behavior and electron pull. 7 They determine reactivity and bonding capacity (valency). 8 Adding electrons increases repulsion, enlarging the ion. 9 Metals tend to lose electrons and be reactive. 10 Atomic number equals number of protons, defining the element.

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Periodic Trends and Atomic Structure

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Periodic Trends and Atomic StructureVersión en línea

por mmodh2

What is the octet rule in simple terms?

Why does atomic radius generally increase down a group?

What happens to atomic radius when an atom loses an electron to form a cation?

Valence electrons are located in which part of the atom?

Which statement best describes ionisation energy?

What does electronegativity measure?

Which describes valence electrons?

What happens to ionic radius when an electron is gained?

What are metals typically characterized by?

Which statement is true about nucleus and protons?

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