Ionic Compounds of s-Block Elements and p-Block Elements Quiz
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Questions and Answers

Why is a cation smaller than its parent atom?

  • It has more electrons than the parent atom.
  • It has a larger atomic radius.
  • It has fewer electrons than the parent atom. (correct)
  • It has more protons than the parent atom.

Which ion has a larger ionic radius compared to its parent atom?

  • Na+ (Sodium ion)
  • Li+ (Lithium ion)
  • Cl- (Chloride ion)
  • F- (Fluoride ion) (correct)

What leads to the increase in the size of an anion compared to its parent atom?

  • Addition of electrons leading to increased repulsion (correct)
  • Decrease in atomic number
  • Decrease in the number of neutrons
  • Decrease in the number of protons

What is the term used for atoms and ions containing the same number of electrons?

<p>Isoelectronic species (C)</p> Signup and view all the answers

Why does the ionic radius of a cation differ from its parent atom?

<p>Removal of electrons (D)</p> Signup and view all the answers

In general, how do ionic radii compare to atomic radii?

<p>Ionic radii follow the same trend as atomic radii. (B)</p> Signup and view all the answers

Which type of oxide is formed by elements on the extreme right of a period?

<p>Acidic oxides (A)</p> Signup and view all the answers

What do amphoteric oxides exhibit when reacting with bases?

<p>Basic behavior (A)</p> Signup and view all the answers

Which element mentioned in the text forms a neutral oxide?

<p>Nitrogen (N) (C)</p> Signup and view all the answers

What is the oxidation state of aluminum (Al) as stated in the text?

<p>3 (D)</p> Signup and view all the answers

Which property generally decreases from left to right in a period?

<p>Atomic radii (D)</p> Signup and view all the answers

What type of properties are a manifestation of the electronic configuration of elements?

<p>Chemical properties (D)</p> Signup and view all the answers

Which group of elements is known for adding one or two electrons to attain a stable noble gas configuration?

<p>Halogens and chalcogens (C)</p> Signup and view all the answers

Why are the noble gases extremely unreactive?

<p>Because of the addition of electrons to their stable valence shell configuration (D)</p> Signup and view all the answers

Which group of non-metals has highly negative electron gain enthalpies?

<p>Halogens and chalcogens (B)</p> Signup and view all the answers

What are the elements of Group 3 to 12 in the Periodic Table referred to as?

<p>Transition elements (A)</p> Signup and view all the answers

Which elements are included in the p-Block Elements?

<p>Group 13 to 18 (D)</p> Signup and view all the answers

Why are the compounds of lithium and beryllium different from other s-block elements?

<p>They are predominantly ionic (A)</p> Signup and view all the answers

What trend is observed in atomic radii as one moves across each period from left to right?

<p>Decrease (B)</p> Signup and view all the answers

Which element has the highest electronegativity value on the Pauling scale in Period II?

<p>F (A)</p> Signup and view all the answers

In the OF2 molecule, which element shares one electron with oxygen?

<p>F (A)</p> Signup and view all the answers

What is the oxidation state of oxygen in the Na2O compound?

<p>-2 (C)</p> Signup and view all the answers

Which atom in Group I has the lowest electronegativity value on the Pauling scale?

<p>Cs (D)</p> Signup and view all the answers

What is the oxidation state of fluorine in the OF2 molecule?

<p>-1 (A)</p> Signup and view all the answers

What factor outweighs the shielding effect across a period in the trend of ionization enthalpy?

<p>Increasing nuclear charge (D)</p> Signup and view all the answers

Why does it require less energy to remove the outermost electron down a group?

<p>Increasing shielding (B)</p> Signup and view all the answers

What makes it easier to remove the fourth 2p-electron from oxygen than one of the three 2p-electrons from nitrogen?

<p>Increasing nuclear charge in oxygen (D)</p> Signup and view all the answers

Which element in the third period has the highest first ionization enthalpy?

<p>Silicon (B)</p> Signup and view all the answers

Why does the ionization enthalpy increase across a period?

<p>Increased nuclear charge (A)</p> Signup and view all the answers

What trend in the ionization enthalpy values of Na, Mg, and Si can be observed in the third period elements?

<p>Increasing (C)</p> Signup and view all the answers

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