Chemistry

Problem

Three nuclides are listed below.

X : A=37,\; Z=17

Y : A=37,\; Z=18

Z : A=35,\; Z=17

a. (i) Calculate the neutron number

N

for each of the nuclides

X

Y

and

Z

. b. (ii) Identify every possible pair among

X

Y

and

Z

that are (a) isotopes, (b) isobars and (c) isotones. State the reason for each identification.