The element Z has two isotopes, X-35 and Z-37. The atomic number of element Z was found to be 17. It has 4 letters in total, which is used as its chemical representation. The above image shows the two mentioned isotopes of the element Z.
1. Identify the element Z.
a. F
b. Cl
c. Br
d. I
2. Name the group to which Z belongs.
a. 5
b. 6
c. 7
d. 4
3. Name the period to which Z belongs.
a. 1
b. 2
c. 3
d. 4
4. Give the valency for Z element.
a. 1
b. 2
c. 3
d. 4
5. What is the atomic weight of Z ?
a. 37
b. 35.4
c. 36
d. 32
