Determine the number of protons, neutrons and electrons of the following elements: Se 34 78 , O + 8 17 , Fe 2 + 26 55 , Cl - 17 35 | General Chemistry 1

Se 34 78 ⇒ 34 protons, 44 neutrons, 34 electrons O + 8 17 ⇒ 8 protons, 9 neutrons, 7 electrons Fe 2 + 26 55 ⇒ 26 protons, 55 neutrons, 24 electrons Cl - 17 35 ⇒ 17 protons, 18 neutrons, 18 electrons

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Atomic structure - 2 | The Atomic Theory

Chapter 2 - The Atomic Theory

Determine the number of protons, neutrons and electrons of the following elements: ^{${}_{34}^{78}{Se}$ , ${}_{8}^{17}O^{+}$ , ${}_{26}^{55}{Fe}^{2 +}$ , ${}_{17}^{35}{Cl}^{-}$}

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Solution

${}_{34}^{78}{Se}$ ⇒ 34 protons, 44 neutrons, 34 electrons

${}_{8}^{17}O^{+}$ ⇒ 8 protons, 9 neutrons, 7 electrons

${}_{26}^{55}{Fe}^{2 +}$ ⇒ 26 protons, 55 neutrons, 24 electrons

${}_{17}^{35}{Cl}^{-}$ ⇒ 17 protons, 18 neutrons, 18 electrons

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Atomic structure - 2 | The Atomic Theory

General Chemistry 1 - Atomic structure - 2