According to Medeleev’s Periodic Law, the elements were arranged in the periodic table in the order of
  • increasing atomic number
  • decreasing atomic number
  • increasing atomic masses
  • decreasing atomic masses
Consider the following elements:
  • Ca and S
  • Ca and O
  • Ar and S
  • O and S
The electronic configuration of the atom of an element X is 2, 4, In the modern periodic table, the element X is placed in:
  • 2nd group
  • 4th group
  • 14th group
  • 8th group
Which of the following element would lose an electron easily?
  • Mg
  • Na
  • K
  • Ca
The element A, B, C, D and E have atomic numbers 9, 11, 17, 12 and 13 respectively. The pair of elements which belongs to the same group of the periodic table is:
  • A and B
  • B and D
  • A and C
  • D and E
The Newlands Law of Octaves for the classification of elements was found to be applicable only up to the element
  • Potassium
  • Calcium
  • Cobalt
  • Thorium
An element X forms an oxide X^g. In which group of Modem periodic table is this element placed?
  • Group 2
  • Group 3
  • Group 5
  • Group 13
The atomic numbers of the elements Na, Mg, K and Ca are 11, 12, 19 and 20 respectively. The element have the largest atomic radius is:
  • Mg
  • Na
  • K
  • Ca
Where would you locate the element with electronic configuration 2, 8 in the Modern Periodic Table?
  • Group 8
  • Group 18
  • Group 10
  • Group 16
Which of the following is the valance shell for the elements of second period of the modern periodic table?
  • M shell
  • K shell
  • L shell
  • N shell
Which of the following statements is not a correct statement about the trends when going from left to right across the periods of the periodic table?
  • The elements becomes less metallic in nature
  • The number of valance electrons increases
  • The atoms lose their electrons more easily
  • The oxides become more acidic
The longest period of the Modern Periodic Table is period.
  • first
  • second
  • fourth

  • sixth

The inert gas which lies in third period is
  • Helium
  • Neon
  • Argon
  • Xenon
An element with atomic number 40 is placed in period.
  • 5
  • 6
  • 4
  • 3
The total number of electrons present in the first twenty elements of the periodic table is
  • 250
  • 230
  • 210
  • 190
The element with atomic number 26 will be found in group
  • 2
  • 8
  • 6
  • 10
Eka-aluminium and Eka-silicon are known as
  • gallium and germanium
  • aluminium and silicon
  • iron and sulphur
  • neutron and proton
When an atom of iodine becomes an iodine ion (I
  • decrease
  • increase
  • remain the same
  • none
Which type of elements are poor conductors of heat and electricity?
  • Metals
  • Non-metals
  • Gases
  • None of these
What is the symbol of the element Tungsten?
  • Tu
  • W
  • Ta
  • Tw
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