SAT - Science - Chemistry - Classification of Elements

Question - 1

Which one of the following elements exhibits maximum number of valence electrons?

  • A Na
  • B Al
  • C Si
  • D P

Question - 2

Which of the following gives the correct increasing order of the atomic radii of 0, F and N?

  • A O, F, N
  • B N, F, O
  • C O, N, F
  • D F, O, N

Question - 3

Which among the following elements has the largest atomic radii?

  • A Na
  • B Mg
  • C K
  • D Ca

Question - 4

Which of the following elements would lose an electron easily?

  • A Mg
  • B Na
  • C K
  • D Ca

Question - 5

Which of the following elements does not lose an electron easily?

  • A Na
  • B F
  • C Mg
  • D Al

Question - 6

Which of the following are the characteristics of isotopes of an element?
I. Isotopes of an element have same atomic masses.
II. Isotopes of an element have same atomic number.
III. Isotopes of an element show same physical properties.
IV. Isotopes of an element show same chemical properties.

  • A (i), (iii) and (iv)
  • B (ii), (iii) and (iv)
  • C (ii) and (iii)
  • D (ii) and (iv)

Question - 7

Arrange the following elements in the order of their decreasing metallic character: Na, Si, CI, Mg, AI

  • A CI > Si > AI> Mg > Na
  • B Na > Mg > AI > Si > CI
  • C Na > AI > Mg > CI > Si
  • D AI > Na > Si > Ca > Mg

Question - 8

Arrange the following elements in the order of their increasing non-metallic character: Li, O, C, Be, F

  • A F < O< C < Be < Li
  • B Li < Be < C < 0< F
  • C F < O< C < Be < Li
  • D F < O< Be < C < Li

Question - 9

What type of oxide would Eka-aluminium form?

  • A EO3
  • B EO3O2
  • C E2O3
  • D EO

Question - 10

Three elements B, Si and Ge are:

  • A Metals
  • B Non-metals
  • C Metalloids
  • D Metal, non-metal and metalloid respectively
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