1. In thinking of Harmful and Beneficial Effects of Radiation. It is CORRECT to affirm that: D) Radioactive isotopes may have only harmful effects. The radiation does not cause cancer. Radiation does not have a beneficial effect. Some radioisotopes can be used as tracers to follow the movement of certain substances through the body. 2. Concerning the Ions, Molecules, and Compounds, it is INCORRECT to affirm: C Ion is an atom that has a positive or negative charge because it has unequal numbers of protons and electrons. When two or more atoms share electrons, the resulting combination is called a molecule. Ionization is the process of losing electrons. Molecular formula indicates the elements and the number of atoms of each element that make up a molecule. 3. Concerning Ionic Bonds, it is INCORRECT to affirm that: B) The force of attraction that holds together ions with the same charges is an ionic bond. Positively and negatively charged ions are attracted to one another—opposites attract. Cation is a positively charged ion. Anion, a negatively charged ion. 4. About Covalent Bonds, it is CORRECT to affirm that: B) When a covalent bond forms, only one atom shares electrons. When a covalent bond forms, two or more atoms share electrons Rather than gaining or losing the. Atoms form a covalently bonded molecule by sharing one, two, or three pairs of valence electrons. Atoms form a covalently bonded molecule by duplicating the compounds. The covalent bond is weak.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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1. In thinking of Harmful and Beneficial Effects of Radiation. It is CORRECT to affirm that: D)

Radioactive isotopes may have only harmful effects.
The radiation does not cause cancer.
Radiation does not have a beneficial effect.
Some radioisotopes can be used as tracers to follow the movement of certain substances through the body.

2. Concerning the Ions, Molecules, and Compounds, it is INCORRECT to affirm: C

Ion is an atom that has a positive or negative charge because it has unequal numbers of protons and electrons.
When two or more atoms share electrons, the resulting combination is called a molecule.
Ionization is the process of losing electrons.
Molecular formula indicates the elements and the number of atoms of each element that make up a molecule.

3. Concerning Ionic Bonds, it is INCORRECT to affirm that: B)

The force of attraction that holds together ions with the same charges is an ionic bond.
Positively and negatively charged ions are attracted to one another—opposites attract.
Cation is a positively charged ion.
Anion, a negatively charged ion.

4. About Covalent Bonds, it is CORRECT to affirm that: B)

When a covalent bond forms, only one atom shares electrons.
When a covalent bond forms, two or more atoms share electrons Rather than gaining or losing the. Atoms form a covalently bonded molecule by sharing one, two, or three pairs of valence electrons.
Atoms form a covalently bonded molecule by duplicating the compounds.
The covalent bond is weak.

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