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• Atom is assigned uniquely to an element by the count of protons in its nucleus: N(p+) = Z, its atomic number... = unique + & - tools! %3D An element is one to many atoms of one type - with the same Z. From 1 to 118, Z orders the elements in the periodic table. ... In an atom, N(p+) = N(e), but Z = N(p+) because all chemical changes keep the nucleus and its protons intact. Electrons may +! Z e element's chemical symbol! Z = 13 Z = 2 He %3D ... He(g) Al(s) Helium nuceus Aluminum nuclens %3D 13 protens 2 protns z(nucleus) =1Z +2 +13 T/E Atoms of the same element may have different nuclear charge. T/F Atoms of the same element must have the same number of e 's T/F Atomic numbers are made integers by rounding. T/F Atomic number may change in a chemical change.

• Atom is assigned uniquely to an element by the count of protons in its nucleus: N(p+) = Z, its atomic number... = unique + & - tools! %3D An element is one to many atoms of one type - with the same Z. From 1 to 118, Z orders the elements in the periodic table. ... In an atom, N(p+) = N(e), but Z = N(p+) because all chemical changes keep the nucleus and its protons intact. Electrons may +! Z e element's chemical symbol! Z = 13 Z = 2 He %3D ... He(g) Al(s) Helium nuceus Aluminum nuclens %3D 13 protens 2 protns z(nucleus) =1Z +2 +13 T/E Atoms of the same element may have different nuclear charge. T/F Atoms of the same element must have the same number of e 's T/F Atomic numbers are made integers by rounding. T/F Atomic number may change in a chemical change.

Chemistry
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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• Atom is assigned uniquely to an element by the count of protons in its nucleus: N(p+) = Z, its atomic number... = unique + & - tools! An element is one to many atoms of one type - with the same Z. From 1 to 118, Z orders the elements in the periodic table. In an atom, (p+) = N(e), but Z = N(p+) because all chemical changes keep the nucleus and its protons intact. Electrons may ±! Z e element's chemical symbol! %3D ... Не (g) Z = 13 Al Al(s) %3D Helium Z = 2 A He Heliuni uckts Aluminum mucleus *13 protens 2 prot z(nucleus) =1Z +2 +13 T/E Atoms of the same element may have different nuclear charge. T/F Atoms of the same element must have the same number of e 's T/F Atomic numbers are made integers by rounding. T/F Atomic number may change in a chemical change.
Transcribed Image Text:• Atom is assigned uniquely to an element by the count of protons in its nucleus: N(p+) = Z, its atomic number... = unique + & - tools! An element is one to many atoms of one type - with the same Z. From 1 to 118, Z orders the elements in the periodic table. In an atom, (p+) = N(e), but Z = N(p+) because all chemical changes keep the nucleus and its protons intact. Electrons may ±! Z e element's chemical symbol! %3D ... Не (g) Z = 13 Al Al(s) %3D Helium Z = 2 A He Heliuni uckts Aluminum mucleus *13 protens 2 prot z(nucleus) =1Z +2 +13 T/E Atoms of the same element may have different nuclear charge. T/F Atoms of the same element must have the same number of e 's T/F Atomic numbers are made integers by rounding. T/F Atomic number may change in a chemical change.
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