Some Basic Concepts Of Chemistry Question 193
Question: The element whose a atom has mass of $ 10.86\times {10^{-26}} $ kg is
Options:
A) Boron
B) Calcium
C) Silver
D) Zinc
Show Answer
Answer:
Correct Answer: D
Solution:
1 atom has mass $ =10.86\times {10^{-26}}kg $
$ =10.86\times {10^{-23}}gm $
$ 6.023\times 10^{23} $ atoms has mass = $ 10.86\times {10^{-23}}\times 6.023\times 10^{23} $ = $ 65.40gm $
This is the atomic weight of Zn.
