Which statement is correct? A charge neutral atom contains the same number of neutrons and electrons. An electron is much heavier than a proton. A proton and an electron have opposite charges. A nucleus contains neutrons and electrons, but no protons.

Which statement is correct? A charge neutral atom contains the same number of neutrons and electrons. An electron is much heavier than a proton. A proton and an electron have opposite charges. A nucleus contains neutrons and electrons, but no protons.

Chemistry for Today: General, Organic, and Biochemistry

9th Edition

ISBN:9781305960060

Author:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen

Publisher:Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen

Chapter2: Atoms And Molecules

Section: Chapter Questions

Problem 2.81E: Atoms are electrically neutral. This means that an atom will contain a.more protons than neutrons....

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Group 14 Elements

The following elements come under group 14 of the periodic table.

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Which statement is correct?
A charge neutral atom contains the same number of neutrons and electrons.
An electron is much heavier than a proton.
A proton and an electron have opposite charges.
A nucleus contains neutrons and electrons, but no protons.

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Mass spectrometric analysis showed that there are four isotopes of an unknown element having the following masses and abundances: Three elements in the periodic table that have atomic weights near these values are lanthanum (La), atomic number 57, atomic weight 138.9055; cerium (Ce), atomic number 58, atomic weight 140.115; and praseodymium (Pr), atomic number 59, atomic weight 140.9076. Using the data above, calculate the atomic weight, and identify the element if possible.
Atoms are electrically neutral. This means that an atom will contain a.more protons than neutrons. b.more electrons than protons. c.an equal number of protons and electrons. d.None of the above.
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