Font size
WorksheetsChapter 8: Main Group Elements
Total questions: 20
Worksheet time: 10mins
Which of the following correct for members in Group 18.
H, Ne, Kr, Ar, Rn, Xe
He, Ne, Rn, Kr, Ar, Xe
He, Na, Rn, K, Ar, Xe
H, Ne, Rb, Kr, Ar, Xe
As going down Group 18, melting point
Increase
Decrease
Elements in Group 18 exist in nature as a
Solid
Liquid
Gas
Group 18 elements are chemically inert because
They achieved stable electron octet arrangement
It will not accept, donate or share electron
It is monoatomic in nature
Which of the followings is incorrect on physical property as going down Group 17
Melting & boiling point increase
Density increase
Colour becomes lighter
State of matter change from gas to liquid to solid
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
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
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
All elements of Group 14 in the Periodic Table form two oxides. Which statement is true about the oxides?
The oxides with +4 oxidation state react with alkali.
The thermal stability of the oxides with +2 oxidation state decreases down the group
The oxides with +2 oxidation state change from acidic to amphoteric down the group
The oxides with +2 oxidation state are less stable than the oxides with +4 oxidation state
The melting point of carbon, silicon and germanium are shown in the table below.The melting point decreases from carbon to germanium because the
strength of covalent bonds decrease
van der Waals forces decrease
electrical conductivity increases
atomic mass increases
The symbol for helium is
H
He
Hl
Hm
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
Which of the following is a solid at room temperature?
Fluorine
Chlorine
Bromine
Iodine
Reactivity of halogen decreases going down the group because
The 8th electron difficult to attract by nucleus
Atomic size decreases down the group
Electrons are closer to the nucleus
Screening effect decreases
