In Figure 1, the letters A, E, G, J, X and Z show the positions of six elements in the periodic table - Edexcel - GCSE Chemistry - Question 2 - 2019 - Paper 1
Question 2
In Figure 1, the letters A, E, G, J, X and Z show the positions of six elements in the periodic table.
These letters are not the symbols of the atoms of these eleme... show full transcript
Worked Solution & Example Answer:In Figure 1, the letters A, E, G, J, X and Z show the positions of six elements in the periodic table - Edexcel - GCSE Chemistry - Question 2 - 2019 - Paper 1
Step 1
give the letters of the two elements that are non-metals.
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Answer
The non-metals present in the periodic table positions indicated are represented by the letters E and X.
Step 2
give the letters of two elements in period 2.
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Answer
The elements in period 2 are A and E.
Step 3
give the letter of an element that normally forms an ion with a charge of +1.
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Answer
The element that typically forms a +1 ion is represented by the letter J, which corresponds to sodium.
Step 4
Explain, in terms of subatomic particles, what is meant by the term isotopes.
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Answer
Isotopes are variants of a particular chemical element that have the same number of protons (atomic number) but different numbers of neutrons, resulting in different atomic masses. For instance, Element E has two isotopes: one with 5 protons and 5 neutrons (mass number 10) and another with 5 protons and 6 neutrons (mass number 11). This variation in neutrons leads to different atomic mass but does not change the chemical properties of the element.
