The atomic symbols of the first twenty elements in the periodic table are shown in Figure 3 - Edexcel - GCSE Chemistry Combined Science - Question 3 - 2016 - Paper 1
Question 3
The atomic symbols of the first twenty elements in the periodic table are shown in Figure 3.
(i) From the position of beryllium, Be, in the periodic table, berylliu... show full transcript
Worked Solution & Example Answer:The atomic symbols of the first twenty elements in the periodic table are shown in Figure 3 - Edexcel - GCSE Chemistry Combined Science - Question 3 - 2016 - Paper 1
Step 1
From the position of beryllium, Be, in the periodic table, beryllium is most likely to be a
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
Beryllium (Be) is located in Group 2 of the periodic table, which includes alkaline earth metals. Therefore, beryllium is most likely to be a A metal.
Step 2
Give the symbol of the element that is in period 2 and in group 3.
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 element in period 2 and group 3 of the periodic table is B.
Step 3
State the number of electron shells in an atom of potassium, K.
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
Potassium, K, is in period 4 of the periodic table, which means it has 4 electron shells.
