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chemistry igcse acapprinted 14 · PDF 14
145 pagesrevision 46934
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14
Past Paper Questions
Paper 2 :
The Atomic Number of element Q is 9 and its mass number is 19. In which Group of the
Periodic table Should element Q be placed ?
Group VIII
Group I
Group VII
Group II
Which of the following Statements is Correct:
Elements contain different atoms
Compounds consist of elements that are not chemically combined
Mixtures consist of elements that are chemically combined
A mixture can contain elements and compounds
The X+ ion has 16 electrons and a nucleon number of 37. What is the correct group number for
element X
VII
VIII
III
I
Iridium has 2 Isotopes : 191Ir and 193Ir . The Percentage Abundances are as follows : Iridium-191 :
62.7% and Iridium- 193 : 37.3% . What is the relative atomic mass of iridium:
191.2
191.6
191.7
192.5
Element X contains 4 electrons in its outer shell and 125 neutrons in its nucleus. What is element
X ?
Beryllium
Carbon