The atomic symbols of the first twenty elements in the periodic table are shown in Figure 3 - Edexcel - GCSE Chemistry - Question 2 - 2016 - Paper 1
Question 2
The atomic symbols of the first twenty elements in the periodic table are shown in Figure 3.
From the position of beryllium, Be, in the periodic table, beryllium is... 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 - Question 2 - 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 the second group and second period of the periodic table, which categorizes it as a metal. Therefore, the correct answer is 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 is boron. Thus, the symbol 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 located in period 4 of the periodic table, which indicates that it has 4 electron shells.
