Problem: A certain element has only two naturally occurring isotopes: one with 18 neutrons and the other with 20 neutrons. The element forms 1– charged ions when in ionic compounds. Predict the identity of the element. What number of electrons does the 1– charged ion have?

FREE Expert Solution

We’re being asked to predict the identity of the elemen and determine the number of electrons the 1– charged ion has.

An element can be represented as:


You can determine the identity of the element using its atomic number:

Atomic number (Z): 

represents the identity of the element
reveals the number of protons
in a neutral element:

            # of protons = # of electrons

Mass number (A)

reveals the number of protons and neutrons

            mass number = # of protons + # of neutrons

Given: 

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Problem Details

A certain element has only two naturally occurring isotopes: one with 18 neutrons and the other with 20 neutrons. The element forms 1– charged ions when in ionic compounds. Predict the identity of the element. What number of electrons does the 1– charged ion have?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Ions concept. You can view video lessons to learn Ions. Or if you need more Ions practice, you can also practice Ions practice problems.

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Based on our data, we think this problem is relevant for Professor Rines' class at PBCC.

What textbook is this problem found in?

Our data indicates that this problem or a close variation was asked in Chemistry: An Atoms First Approach - Zumdahl Atoms 1st 2nd Edition. You can also practice Chemistry: An Atoms First Approach - Zumdahl Atoms 1st 2nd Edition practice problems.