Four elements W, X, Y and Z have atomic number 2,6,16 and 20 respectively. Which of these elements is a metal?

DoctorStella

5 years ago

Sulphur is not a metal (atomic number 16)
The correct answer is Calcium, which is an alkaline earth metal with the atomic number 20
so the correct answer should be D Calcium

egbonjosh

8 years ago

yeah... very correct
2-helium(real gas)
6-carbon(non metal)
16-oxygen(non metal)
20-calcium(metal)

Yungjay20080702

2 years ago

atomic number of calcium is 20 and Ca is in group 2 of the periodic table and group 2 are known to be alkaline earth metal

Abdulliadi

7 years ago

comfirm option c is correct because calcium fall into group 1 and the group 1elememt are alkaline metal

Diala Chidiebere

11 years ago

Correct, because Z has 20 atomic number, the element that has 20 atomic number is calcium and calcium is a metal

jellyb

1 year ago

isn't it supposed to be D
cause D is Z and that's 20