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WorksheetsPeriodic Table Of Elements - Group 18 & Group 1
Total questions: 36
Worksheet time: 3hrs 0mins
What are the elements in group 18 (the far right) of the periodic table called?
Alkali metals
Alkaline earth metals
Halogens
Noble gases
Diagram shows the symbol of neon. Which statements is not true about neon?
Neon exist as a monatomic elements
Neon has low melting and boiling point
Neon has a low density
Neon reacts with bromine to form a covalent compound
The symbol for helium is
H
He
Hl
Hm
Why is Helium used in divers' tank but not hydrogen gas?
Helium is lighter than hydrogen
Helium is inert to any chemical reactions
Helium is cheaper
Helium is easy to get from market
Argon (proton number =18) is inert to any chemical reaction because
It is light
it is located in Group 18
it has achieved stable duplet electron arrangement
it has achieved stable octet electron arrangement
Noble Gases are in group # ___.
12
18
8
3
Groups on the periodic table are arranged...
Vertically
Horizontally
Diagonally from bottom right corner
Diagonally from top right corner
Each horizontal row on the periodic table is called a what?
Group
Row
Period
Family
Elements in the same group or column have the same ...
# of valence electrons
# of shells
# of protons
Mass Number
An atom of element R has 14 neutrons. Nucleon number of element R is 27. In which Group and period R located in Periodic Table?
Group 13. period 2
Group 14, Period 2
Group 13, Period 3
group 14, Period 3
Which property of Group 18 elements increases when going down the Group in the Periodic Table?
Forces of attraction
Reactivity
Solubility in water
Electrical conductivity
Atom T has a proton number of 11 and a nucleon number of 23. Which of the following is true about element T?
It does not conduct electricity
If forms an oxide with the formula TO
It is a hard black solid
It reacts with water to form an alkaline solution
Table shows the relative atomic masses of two elements, H and J. Element H and J are located in Group 1 of the Periodic Table. Which statements is true about elements H and J?
H is more electropositive than J
The melting point of J is higher than that of H
The number of valence electrons in atom J is more than that of atom H
J reacts with cold water more vigorously than H
Which statements is correct about the alkali metals when going down Group 1 in the Periodic Table?
The reactivity decreases
Strength of nucleus to attract an electron into the valence shell increases
Electropositivity decreases
The single valence electron becomes more weakly pulled by the nucleus
The following shows some information about element M.
1) element M forms ions with the formula M+
2) An M+ ion has an electron arrangement of 2.8
Element M will?
reacts with red-hot iron to form a brown solid
displaces hydrogen gas from cold water
forms an acidic oxide
cannot conduct electricity
The order of elements in the periodic table is based on
the number of protons in the nucleus.
the electric charge of the nucleus.
the number of neutrons in the nucleus.
atomic mass.
Alkali metals are extremely reactive because they
have every small atomic masses.
are not solid at room temperature.
have one valence electron that is easily removed to form a positive ion.
have two valence electrons that form compounds with calcium and magnesium.
Arrange the elements in group 1 from the top to bottom of the group.
Li, Na, K, Fr, Rb, Cs
Li, Na, K, Rb, Fr, Cs
Li, Na, K, Rb, Cs, Fr
Fr, Cs, Rb, K, Na, Li
Group 1 elements are also known as
Noble gas
Halogen
Alkaline earth metals
Alkali metals
Group 1 elements only form ….. Ion
1+
1-
2+
2-
What gas is given off when group 1 elements reacts with water?
Hydrogen
Oxygen
Carbon dioxide
Helium
How many electrons are in the outer shell of group 1 elements?
0
1
2
3
Why does the reactivity of group 1 elements increases down the group?
It becomes more reactive
It becomes easier to accept an electron
It becomes easier to lose an electron
It becomes less reactive
Q and R are two elements located in the same group. The proton number of Q is 9. What is the possible electron arrangement of atom R?
2.8.7
2.8.8
2.8.8.1
2.8.8.4
What is the factor that determines the chemical properties of an element?
The number of electron shells
The number of electrons in the innermost shell
The number of electrons in the outermost shell
The number of neutrons in the nucleus
Select two correct answers. Going the down Group 1,
Reactivity increases
Atomic size decreases
Electropositivity increases
Density decreases
Explain why reactivity increases going down Group 1.
Atomic size increased, and the force of attraction between nucleus and valence electron increased.
Atomic size decreased, and the force of attraction between nucleus and valence electron decreased.
Atomic size increased, and the force of attraction between nucleus and valence electron decreased.
Atomic size decreased, and the force of attraction between nucleus and valence electron increased.
Explain why melting and boiling point decreases, going down Group 1.
Metallic bond between atoms becomes weaker, energy required to overcome metallic bond decreased.
Metallic bond between atoms becomes stronger, energy required to overcome metallic bond increased
Metallic bond between atoms becomes stronger, energy required to overcome metallic bond decreased.
Metallic bond between atoms becomes weaker, energy required to overcome metallic bond increased.
What is the definition of electropositivity?
Tendency of atom to gain electrons, and form positive ion in chemical reactions.
Tendency of atom to lose electrons, and form negative ion in chemical reactions.
Tendency of atom to gain electrons, and form negative ion in chemical reactions.
Tendency of atom to lose electrons, and form positive ions in chemical reactions.
Explain why electropositivity decreases, going down Group 1.
Atomic size increased, Force of attraction between nucleus and valence electron increased. Electrons are harder to lose.
Atomic size increased, Force of attraction between nucleus and valence electron decreased. Electrons are easier to lose.
Atomic size decreased, Force of attraction between nucleus and valence electron increased. Electrons are harder to lose.
Atomic size decreased, Force of attraction between nucleus and valence electron decreased. Electrons are easier to lose.
When alkali metals are reacted with oxygen gas, metal oxides are produced in form of white solids. Choose the pair that gives the same result and what is it.
Lithium and sodium
Lithium and potassium
Turns green universal indicator into pink
Turns green universal indicator into purple
what can be observed, when lithium is reacted with water?
Metal moves fast on surface of water, and red flame is produced.
Metal moves slowly on surface of water, and purple flame is produced.
Metal moves slowly on surface of water, and red flame is produced.
Metal moves fast on surface of water, and purple flame is produced.
What can be observed when potassium is reacted with oxygen and chlorine gas?
Burns slowly and produce yellow flame
Burns very brightly and produce purple flame
Burns very brightly and produce yellow flame
Burns slowly and produce purple flame
