Period 3 Elements: Atomic and Physical Properties

Descrição

Quiz for Chapter 1, textbook for Chemistry FSc Part 2
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Quiz por haaniaaamir13, atualizado more than 1 year ago
haaniaaamir13
Criado por haaniaaamir13 quase 9 anos atrás
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Resumo de Recurso

Questão 1

Questão
Which of the two elements Mg and Al has a more stable structure?
Responda
  • Mg
  • Al
  • Both have stable structure

Questão 2

Questão
As we go from left to right in a period, the atomic radius
Responda
  • Increases
  • Decreases
  • Does not change

Questão 3

Questão
According to the Pauling scale, the most electronegative element is
Responda
  • Francium
  • Cesium
  • Fluorine

Questão 4

Questão
Electronegativity is defined as
Responda
  • A measure of the charge on the electrons surrounding the nucleus in an atom.
  • A measure of the tendency of an atom to attract a bonding pair of electrons.
  • A measure of the tendency of an atom to attract an electron towards itself.

Questão 5

Questão
In going from left to right in a period, the electronegativity values
Responda
  • Decrease
  • Increase
  • Increase and then decrease

Questão 6

Questão
The electronegativity value of Argon is
Responda
  • 0.7
  • 3
  • No value

Questão 7

Questão
The structures of elements, as you go from left to right in a period, change as follows
Responda
  • Na, Mg and Al have metallic structures. Si has giant covalent structure. P, S, Cl, Ar are simple molecules.
  • Na, Mg and Al are simple molecules. Si has metallic structure. P, S, Cl, Ar have a covalent structure.
  • All elements have same structure.

Questão 8

Questão
The electrical conductivity in period 3, as you move from left to right in the period
Responda
  • Increases
  • Decreases
  • Remains constant

Questão 9

Questão
The forces of attraction between the molecules of Phosphorous, Sulphur, Chlorine and Argon are
Responda
  • Van der Waal attractions
  • Ionic bonds
  • Covalent bonds

Questão 10

Questão
The melting and boiling points of Phosphorous, Sulphur, Chlorine and Argon as compared to ones of previous elements in the period are
Responda
  • Lower
  • Higher
  • Equal

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