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WorksheetsPeriodic Classification of the Elements
Total questions: 63
Worksheet time: 2hrs 36mins
An atom of an element has the electronic confi-guration 2,8,2. To which group does it belong?
(a) 4th group
(b) 6th group
(c) 3rd group
(d) 2nd group
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
Carbon belongs to the second period and Group 14. Silicon belongs to the third period and Group 14. If atomic number of carbon is 6, the atomic number of silicon is
(a) 7
(b) 14
(c) 24
(d) 16
The atom of an element has electronic con-figuration 2, 8, 7. To which of the following elements would it be chemically similar?
(a) N(7)
(b) P(15)
(c) Na(11)
(d) F (9)
Atoms of elements in group 1 have ____________.
one electron in their outermost energy level
two electrons in their outermost energy level
seven electrons in their outermost energy level
eight electrons in their outermost energy level
Which of the following does not increase while moving down the group of the periodic table?
Atomic radius
Metallic character
Valency
Number of shell in an element
The elements with atomic numbers 2, 10, 18, 36, 54 and 86 are all
halogens.
nobel gases.
nobel metals.
light metals.
Pick out the correct statement regarding Mendeleev's periodic table.
Mendeleev predicted periodicity based on the similarities of physical properties of the elements only.
All the elements fit the classification with increasing atomic weight.
The elements in a group are not similar in their properties.
Mendeleev predicted the existence of Eka-Aluminium and Eka-Silicon.
The three elements having chemical symbols of Si, B and Ge are-
All metals
All non metals
All metalloids
Si is metalloid
B is metal
Ge is non metal
___________ elements were known when mendeleev presented the periodic table
63
65
64
92
Which was the first classification of elements ?
Newlands law of octaves
Dobernier Triads
Metal and non metal
Mendeleev periodic table
Eka boron is
Germanium
Gallium
Scandium
Aluminum
Which of the following were not included in the mendeleev periodic table ?
Halogens
Alkali metal
Non metals
Isotopes
Which of the following is the limitation to Newland's classification
Newlands assume that most of elements existed were gases
Iron which resembles Cobalt and calcium was placed far away from these elements
Newland assumed that only 45 elements existed
Newlands law of classification was limited only upto calcium
What is Sodium's element symbol?
Ne
Na
Al
P
The groups of a periodic table are located where?
The horizontal rows
The vertical columns
The rows on the periodic table are called __________?
Columns
Alleys
Periods
Groups
Most element on the periodic table are _______?
Metals
Nonmetals
Metalloids
Gases
Where are most metals on the periodic table?
On the left side of the periodic table
On the right side of the periodic table
What does A represent on an element box?
Element name
Element symbol
Atomic Number
Atomic Mass or Mass Number
What does B represent on an element box?
Element name
Element symbol
Atomic Number
Atomic Mass or Mass Number
What does C represent on an element box?
Element name
Element symbol
Atomic Number
Atomic Mass or Mass Number
What does D represent on an element box?
Element name
Element symbol
Atomic Number
Atomic Mass or Mass Number
The number of ____________ in the atom determines its identity.
Electrons
Protons
Neutrons
Elements
What are the shaded elements in the picture categorized as?
Metals
Nonmetals
Metalloids
Gases
Using the periodic table as a reference, which group of elements has similar chemical properties?
C, N, O, F
Mg, Ca, Sr, Ba
B, Si, As, Te
He, Ne, Ar, Xe
The diagram shows a model of an atom of a particular element. Which element is represented by the model?
The diagram shows a model of an atom of a particular element. Which element is represented by the model?
Using the periodic table, determine the classification of Sodium (Na).
Metal
Nonmetal
Metalloid
Gas
Using the periodic table, determine the classification of Oxygen (O).
Metal
Nonmetal
Metalloid
Gas
Using the periodic table, determine the classification of Boron (B).
Metal
Nonmetal
Metalloid
Gas
Using the periodic table, determine the classification of Iron (Fe).
Metal
Nonmetal
Metalloid
Gas
The number of periods and groups in the
periodic table are______.
6,16
7,17
8,18
7,18
The basis of modern periodic law is______.
atomic number
atomic mass
isotopic mass
number of neutrons
_____ group contains the member of
halogen family.
17th
15th
18th
16th
_____ is a relative periodic property
atomic radii
ionic radii
electron affinity
electronegativity
Neon shows zero electron affinity due to
_____.
stable arrangement of neutrons
stable configuration of electrons
reduced size
increased density
Which of the following have inert gases
2 electrons in the outermost shell.
He
Ne
Ar
Kr
What is the name of group number 1?
halogens
noble gases
alkali metals
alkaline earth metals
What is the name of group number 2?
transition metals
halogens
metaloids
alkaline earth metals
where are the metaloids found
far left, vertical
stair step/diagonal
far right horizontal
at the bottom
What group number are the halogens found?
18 (8A)
1
2
17 (7A)
Periodic law states that the elements are arranged according to their atomic ________ so that elements with similar chemical properties are in the same ________ and properties repeat periodically.
numbers, rows
masses, rows
masses, column
numbers, column
A grouping of elements based on similar chemical properties, arranged by columns in the periodic table; also known as a group
family
period
row
isotope
A row on the Periodic Table of Elements
family
period
row
isotope
Metals (select all that apply)
are found on the right side of the periodic table.
are found on the left side of the periodic table.
are good conductors of heat and electricity.
are brittle.
are malleable and ductile.
Nonmetals (select all that apply)
are found on the right side of the periodic table.
are found on the left side of the periodic table.
are good conductors of heat and electricity.
are brittle.
can be solid, liquids, or gases at room temperature.
Which element is found in group 2, period 6?
Oxygen (O)
Barium (Ba)
Selenium (Se)
Carbon (C)
Which halogen is found in period 4?
Krypton (Kr)
Xenon (Xe)
Bromine (Br)
Iodine (I)
Which element has similar chemical properties as sodium but has 7 energy levels?
Francium (Fr)
Cesium (Cs)
Rubidium (Rb)
Potassium (K)
Elements that have the same number of energy levels are said to be in the same ______.
group
period
family
classification
Find these groups: Locate Lanthanides and Actinides.
The element with atomic number 57 belongs to
s-block
p-block
d-block
f-block
Electronic configurations of four elements A, B, C and D are given below :
(A) 1s2 2s2 2p1 (B) 1s2 2s2
(C) 1s2 2s2 2p6 3s1 (D) 1s2 2s2 2p6
Which of the following is the correct order of increasing tendency to lose electron?
D<B<A<C
A<B<C<D
C<A<B<D
D<A<B<C
The order of screening effect of electrons of s, p, d and f orbitals of a given shell of an atom on its outer shell electrons is:
p < d < s > f
f > d > p > s
s > p > d > f
f > p > s > d
The atom of an element has electronic con-figuration 2, 8, 7. To which of the following elements would it be chemically similar?
(a) N(7)
(b) P(15)
(c) Na(11)
(d) F (9)
Check all the characteristics of most metals.
most are gasses at room temperature
solid at room temperature
Poor conductor of electricity
dull luster
good conductor of electricity
What do we call the electrons that are involved in chemical reactions and are in the outermost shell?
Valence Electrons
Isotopes
Atomic Numbers
Alkali metals are the _________ reactive family on the Periodic Table.
Least
Most
Noble gasses are the _________ reactive family on the Periodic Table.
Least
Most
