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.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
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.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The number of protons in this atom of sodium is A 11.
Step 3
State the electronic configuration of sodium.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The electronic configuration of sodium (Na) 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.
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Sodium is placed in group 1 of the periodic table because it has one electron in its outermost shell (3s¹). This single valence electron makes sodium highly reactive and characteristic of alkali metals.
Step 5
Which of the following is a non-metal?
97%
117 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Put a cross in the box (X) next to your answer: C selenium, Se.
Step 6
In terms of electronic configurations, describe a similarity between elements in the same period.
97%
121 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Elements in the same period have the same number of electron shells; however, they differ in the number of electrons in their outermost shell.
