2 (a) State the relative charge on a proton - Edexcel - GCSE Chemistry - Question 2 - 2016 - Paper 1
Question 2
2 (a) State the relative charge on a proton.
(b) Complete the sentence by putting a cross (X) in the box next to your answer.
An atom of sodium has an atomic numbe... show full transcript
Worked Solution & Example Answer:2 (a) State the relative charge on a proton - Edexcel - GCSE Chemistry - Question 2 - 2016 - Paper 1
Step 1
State the relative charge on a proton.
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Answer
The relative charge on a proton is +1.
Step 2
Complete the sentence by putting a cross (X) in the box next to your answer.
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Answer
The number of protons in this atom of sodium is A 11.
Step 3
State the electronic configuration of sodium.
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Answer
The electronic configuration of sodium is 1s² 2s² 2p⁶ 3s¹.
Step 4
Explain, in terms of its electronic configuration, why sodium is placed in group 1 of the periodic table.
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Answer
Sodium is placed in group 1 of the periodic table because it has one electron in its outermost shell (the 3s subshell). This configuration makes sodium highly reactive, as it tends to lose that one electron easily to achieve a stable noble gas configuration.
Step 5
Which of the following is a non-metal?
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Answer
The non-metal among the options is C selenium, Se.
Step 6
In terms of electronic configurations, describe a similarity between elements in the same period.
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Answer
Elements in the same period have the same number of electron shells. For example, all elements in the same period have their valence electrons in the same energy level.
