Exam - Chapter 5 - The periodic table Class IX ICSE Board

1. Name
Date
Periodic Table Score
1. On moving from left to ight in a given pe iod, metallic character gradually increases.
2.
The following diagram showing pa t of the pe iodic table in which atomic radii of elements of
third pe iod are given. Which of the following elements has the lowest atomic radii?
3.
The following diagram showing pa t of the pe iodic table in which atomic radii of elements of
group 17 are given. Which of the following elements has the lowest atomic radii?
4. How the atomic size of the atom va ies while moving across the pe iod from left to ight in a
pe iodic table?
T ueT
FalseF
NaA
PB
ClC
MgD
FA
ClB
IC
BrD

2. 5. Alkali metals:
6. The s-block and p-block elements are also called
as transition elements.
7. In a group, metallic character _______ and non-metallic character _______ from top to bottom.
8. Define groups
9. Name the elements present in group 1 sequentially.
10. Name the first and last element present in group 17
11. Name the first and last element of pe iod 2.
12. In which group halogens are placed in long fo m of pe iodic table?
Fo m basic oxides with oxygenA
All of the aboveB
Fo m hyd ides with hydrogenC
Fo m unipositive ions D
T ueT
FalseF
decreases, increasesA
remains same, increasesB
increases, decreasesC

3. 13. In the long fo m of pe iodic table the elements are a ranged in the ascending order of ______.
14. ______ metals are present in group 1 of the pe iodic table.
15. Name the element present in Group 1 and pe iod 2
16. Name the element present in Group 2 and pe iod 3
17. Name the element present in Group 14 and pe iod 2
18. Why atomic number is more approp iately equal to number of protons?
19. Identify the element present in the following groups and pe iods. 5th pe iod, group 1
20. Identify the element present in the following groups and pe iods. 2nd pe iod, group 11
21. Identify the element present in the following groups and pe iods. 2nd pe iod, group 16

4. 22. Identify the element present in the following groups and pe iods. 3rd pe iod, group 17
23. Identify the element present in the following groups and pe iods. 4th pe iod, group 18
24. Size of the atoms in pe iods decreases in the following manner: Li > Be > B > C > N > O > F
25. Choose the odd one out from te following: He, Ne, H, Kr
26. Choose the odd one out from te following: Na, Rb, Fr, ca
27. Define atomic radius.
28. Elements present in group 1 and 2 on the left side and 13 to 17 on the ight hand side of the
pe iodic table are called as _______ elements.
29. Identify the missing elements from the following Dobereine 's
t iads.
T ueT
FalseF
Li, Sr, IA
Si, P, TeB
Mg, Al, FC

5. 30. The alkaline ea th metals which do not give colour to flame is:
31. When elements are a ranged in the increasing order of their atomic masses, the prope ties of
the _________ element are similar to the first’
32. Why the group 1 elements are called alkali metals?
33. Which of the following t iads is a Dobereine 's T iad?
34. The group 18 elements are also known as:
CaA
MgB
SrC
BaD
N, P, AsA
S, O, HB
Na, Ra, AlC
Li, Na, KD
HalogensA
Noble gasesB
Nitrogen familyC
ChalcogensD

6. 35. What are the me its of Mendeleev’s Pe iodic Table?
36. Elements present in group 1 and 2 on the left side and 13 to 17 on the ight hand side of the
pe iodic table are called as _______ elements.
37. What is pe iodicity?
38. How the atomic size of the atom va ies while moving across the pe iod from left to ight in a
pe iodic table?
39. Alkali metals are characte ized by:
40. There are eight ve tical columns called _________. They are numbered from I to VIII.
He generalized the study of the elements then known as the study of a mere groupsA
In Mendeleev’s pe iodic table, he left some blank spaces. These vacant spaces were left for
including elements that were not discovered at that time.
B
Mendeleev could also predict the prope ties of these unknown elements, on the basis of the
prope ties of the elements lying adjacent to these vacant spaces. He predicted the presence
of three elements. They were named as Eka boron, Eka-aluminium and Eka-silicon. The
prope ties of these three elements were similar to the actual elements discovered later. Eka-
boron was similar to Scandium, Eka-aluminium was similar to Gallium and Eka-silicon was
similar to Ge manium.
C
When noble gases were discovered later, they could be accommodated in the pe iodic table in
the fo m of a separate group without disturbing the positions of the other elements.
D
He was able to co rect the values of the atomic masses of elements like gold and platinum, he
placed these elements going st ictly by the simila ities in their prope ties.
E
ALL OF THE ABOVE.F
Good conductor of heat and elect icityA
High melting pointsB
High ionization potentialsC
Low oxidation potentialD