CROSSWORD PUZZLE FOR CLASS X CHEMISTRY (PERIODIC CLASSIFICATION OF ELEMENTS )

SCIENCE CROSSWORD PUZZLES are very interesting and entertaining way to spice up our knowledge. How  about trying some of them to revise your topics ??

PERIODIC CLASSIFICATION OF ELEMENTS ( CLASS X )

ACROSS ⇒

1.   What is the basis for MODERN PERIODIC TABLE?

3.   Group 17 elements are ________.

5.   Which is the shortest period in the periodic table?

7.   It is a metalloid, lustrous, brittle & a component in computer chips.

9.   This principle states that no two e-s in an orbital can have same four quantum nos.

11. Group of three elements having the same properties.

13. No. of electrons to fill the outermost shells of an atom is called _____.

DOWN ⇒

    2.   Who proposed the Modern Periodic Table?

    4.   Group 3 to 12 are known as _______.

    6.   Elements having same valence ______ are placed in same period.

    8.   The tendency of repetition of similar characters at regular intervals.

   10.  Elements having same valence _____ are placed in same group.

   12.  According to this rule, e-s are filled in lower energy orbitals before the higher energy orbitals.

   14.  All the e-s in singly occupied orbitals have the same spin, states this rule.

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