Question

Please be fast

1.how many elements are there in each the columns in A group elements?
2.how many elements are there in period 4?
3.Identify A group elements.
4.Identify B group elements.​

Answer 1

Step-by-step explanation:

1. 6 elements

2. 18 elements

3. Li, Na, K, Rb, Cs, Fr

4. Cu, Ag, Au, Uun