School of Elements

01.

Name the following: Group of three elements which show similar properties

02.
Fill in the Blanks: Law of Octaves: When the elements are arranged in an increasing
order of their atomic masses, the properties of ______ element are similar to the
first.”

03.
Find the odd one out: Atomic Weight, Density, Melting Point, Cost

04.
True or False: Atomic Radius, when moved in a period (Left to Right) increases

05.
Fill in the Blanks: _______ was placed in Zero-Group of a modern periodic table.

06.
Name the following: In a triad, which property of the middle element is the mean
of that of other two.

07.
Find the odd one out: Chlorine, Bromine, Iodine, Calcium

08.
Fill in the Blanks: _______ are Horizontal Rows (Numbered 1 to 7) in a modern periodic
table

09.
Name the following: Newland arranged elements according which property of an element
in increasing order

10.
The properties which shows gradual variation in a group and in a period, and they
repeat themselves after certain interval of atomic numbers are called
(a) Periodic Properties
(b) Physical Properties
(c) Chemical Properties
(d) Nuclear Properties

11.
Fill in the Blanks: Groups are arranged in _________ (Numbered I to VIII). Groups
I to VII are further divided into (A) and (B) subgroups

12.
Name the following: The two series of inner transition elements

13.
Find the odd one out: Dobereiner, Newland, Mendeleev, Newton

14.
Fill in the Blanks: Newland could arrange elements only upto ___________ out the
total 56 elements known at that time

15.
Name the following: Vertical column of a modern Periodic Table

16.
Fill in the Blanks: __________ was first to successfully classify all known elements

17.
What increases from 1 to 4 (for 2nd and 3rd Period) and then decreases from 4 to
0 ( Left to Right)
(a) Atomic Mass
(b) Valency
(c) Atomic Weight
(d) Electropositivity

18.
Find the odd one out: Boron (B), Silicon (Si), Germanium (Ge), Aluminium (Al)

19.
Fill in the Blanks: Eka-silicon is now known as ________

20.
Name the following: Horizontal row of a modern Periodic Table

21.
True or False: Atomic Radius, when moved in a group (Top to Bottom) increases

22.
Find the odd one out: Aluminium, Sodium, Potassium, Carbon

23.
Name the following: Periods and Groups in modern Periodic Table

24.
Fill in the Blanks: Scandium was earlier known as _________

25.
Find the odd one out: Aluminium, Sodium, Potassium, Mercury

26.
Fill in the Blanks: __________ discovered that Atomic Number is the most fundamental
property for classification, and not Atomic Mass

27.
Name the following: The shortest period of a modern Periodic Table

28.
Tendency of an element to lose electrons is called
(a) Electronegativity
(b) Conductivity
(c) Resistivity
(d) Electropositivity

29.
Fill in the Blanks: Modern Periodic Law: The physical and chemical properties of
elements are a periodic function (they repeat after an interval) of their______________.

30.
Find the odd one out: Valency, Atomic Size, Electropositivity, Hardness

Answers:

01. Triad
02. eighth
03. Cost {Rest all are physical properties of a element}
04. False { It decreases }
05. Noble gases
06. Atomic Mass
07. Calcium {Rest all are Halogens}
08. Periods
09. Atomic Mass
10. (a) Periodic Properties
11. Vertical Columns
12. Lanthanides & Actinides
13. Newton {Rest all are scientist connected with classification of elements }
14. Calcium
15. Group
16. Mendeleev
17. (b) Valency
18. Aluminium {Rest all are metalloids }
19. Germanium
20. Period
21. True { Because more shells are added }
22. Carbon {Rest all are metals }
23. 7 Periods and 18 Group
24. Eka-boron
25. Mercury {Rest all are solid metals }
26. Henry Moseley
27. First Period { has only two elements}
28. (d) Electropositivity
29. atomic numbers
30. Hardness {Rest all are periodic properties }