Atomic Structure Basics
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Questions and Answers

What term is used to describe nuclei with the same number of neutrons and protons?

  • Molecules
  • Isotopes
  • Ions
  • Nuclides (correct)

What is the function of the nuclear force within the nucleus?

  • Facilitate radioactive decay
  • Increase the number of neutrons
  • Supply attraction to overcome electrical repulsion (correct)
  • Create electrical repulsion

Which type of radiation is emitted by unstable atoms as they tend to break apart to attain stability?

  • Alpha radiation (correct)
  • Neutron radiation
  • Electron radiation
  • Proton radiation

What is the term for elements that emit either electrons or positrons to attain stability?

<p>Radioactive elements (A)</p> Signup and view all the answers

What is emitted in gamma decay?

<p>High-energy electromagnetic radiations (D)</p> Signup and view all the answers

Which term is used for nuclei that do not emit any radiations?

<p>'Stable nuclei' (C)</p> Signup and view all the answers

What does the nucleon number, A, represent?

<p>Number of protons plus neutrons in the nucleus (D)</p> Signup and view all the answers

Which symbol is used to represent the chemical symbol for an element in nuclear notation?

<p>X (D)</p> Signup and view all the answers

If an element has an atomic number of 7 and a nucleon number of 15, how many neutrons does it have?

<p>8 (D)</p> Signup and view all the answers

What is the charge number in an atom?

<p>Number of protons (B)</p> Signup and view all the answers

Why is it said that the subscript Z is sometimes dropped in nuclear notation?

<p>To simplify writing chemical symbols (A)</p> Signup and view all the answers

In a neutral atom, what is equal to the number of protons in the nucleus?

<p>Number of electrons (D)</p> Signup and view all the answers

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