Chapter 30, Problem 2Q

To determine

What are the elements represented by X in following

Answer to Problem 2Q

Solution:

Uranium has atomic number of 92, nitrogen has atomic number 7, Hydrogen has atomic number 1, Strontium has atomic number 38 and Fermium has atomic number 100

Explanation of Solution

The isotope can be represented in ${}_Z{}^{A}X$ this form.

Where Z is the atomic number, which is the number of protons in the element

A is the mass number, which is the number of protons plus the number of neutrons.

X is the chemical symbol of the element, and it must correspond to the atomic number.

a)${}_{92}{}^{232}X$ here X is Uranium

b)${}_7{}^{18}X$ here X is nitrogen

c)${}_1{}^{1}X$ here X is hydrogen

d)${}_{38}{}^{86}X$ here X is strontium

e)${}_{100}{}^{252}X$ here X is fermium