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Periodic Classification Of Elements
Quiz 3
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Q.1
_____ group contains the member ofhalogen family.
17th
15th
18th
16th
Q.2
The number of periods and groups in theperiodic table are______.
6,16
7,17
8,18
7,18
Q.3
4.The arrangement of elements in the Modem Periodic Table is based on their
(a) increasing atomic mass in the period
(b) increasing atomic number in the horizontal rows
(c) increasing atomic number in the vertical columns
(d) increasing atomic mass in the group
Q.4
2.At the time of Mendeleev, the number of elements known was
63
65
62
64
Q.5
3.An atom of an element has the electronic confi-guration 2,8,To which group does it belong?
4th group
6th group
3rd group
2nd group
Q.6
5.Pick out the chemically most reactive elements from the given triads.
(a) Li and F
(b) Li and Br
(c) K and F
(d) K and Br
Q.7
A metal ‘M’ is in the first group of the Periodic Table. What will be the formula of its oxide?
(a) MO
(b) M2O
(C) M2O3
(d) MO2
Q.8
6.What is the atomic number of element of period 3 and groupof the Periodic Table?
(a) 10
(b) 4
(c) 17
(d) 21
Q.9
Name the neutral atom in the Periodic Table which has the same number of electrons as K+ and Cl-.
(a) Helium
(b) Argon
(c) Neon
(d) Krypton
Q.10
Which of the following set of elements is written in order of their increasing metallic character?
(a) Na Li K
(b) C Q N
(c) Mg Al Si
(d) Be Mg Ca
0 h : 0 m : 1 s
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