&nbsp;

<img align="middle" alt="begin mathsize 14px style Ba presubscript 56 equals 1 s squared space 2 S squared space 2 p to the power of 6 space 3 s squared space 3 p to the power of 6 space 4 s squared space 3 d to the power of 10 space 4 p to the power of 6 space 5 s squared space 4 d to the power of 10 space 5 p to the power of 6 space 6 s squared
Ba presubscript 56 equals open square brackets Xe close square brackets space 6 s squared end style" class="Wirisformula" data-custom-editor="chemistry" data-mathml="«math style=¨font-family:Arial¨ xmlns=¨http://www.w3.org/1998/Math/MathML¨ class=¨wrs_chemistry¨»«mstyle mathsize=¨14px¨»«mrow»«mmultiscripts»«mi»Ba«/mi»«mprescripts/»«mn»56«/mn»«none/»«/mmultiscripts»«mo»=«/mo»«mn»1«/mn»«msup»«mi mathvariant=¨normal¨»s«/mi»«mn»2«/mn»«/msup»«mo»§#160;«/mo»«mn»2«/mn»«msup»«mi mathvariant=¨normal¨»S«/mi»«mn»2«/mn»«/msup»«mo»§#160;«/mo»«mn»2«/mn»«msup»«mi mathvariant=¨normal¨»p«/mi»«mn»6«/mn»«/msup»«mo»§#160;«/mo»«mn»3«/mn»«msup»«mi mathvariant=¨normal¨»s«/mi»«mn»2«/mn»«/msup»«mo»§#160;«/mo»«mn»3«/mn»«msup»«mi mathvariant=¨normal¨»p«/mi»«mn»6«/mn»«/msup»«mo»§#160;«/mo»«mn»4«/mn»«msup»«mi mathvariant=¨normal¨»s«/mi»«mn»2«/mn»«/msup»«mo»§#160;«/mo»«mn»3«/mn»«msup»«mi mathvariant=¨normal¨»d«/mi»«mn»10«/mn»«/msup»«mo»§#160;«/mo»«mn»4«/mn»«msup»«mi mathvariant=¨normal¨»p«/mi»«mn»6«/mn»«/msup»«mo»§#160;«/mo»«mn»5«/mn»«msup»«mi mathvariant=¨normal¨»s«/mi»«mn»2«/mn»«/msup»«mo»§#160;«/mo»«mn»4«/mn»«msup»«mi mathvariant=¨normal¨»d«/mi»«mn»10«/mn»«/msup»«mo»§#160;«/mo»«mn»5«/mn»«msup»«mi mathvariant=¨normal¨»p«/mi»«mn»6«/mn»«/msup»«mo»§#160;«/mo»«mn»6«/mn»«msup»«mi mathvariant=¨normal¨»s«/mi»«mn»2«/mn»«/msup»«mspace linebreak=¨newline¨/»«mmultiscripts»«mi»Ba«/mi»«mprescripts/»«mn»56«/mn»«none/»«/mmultiscripts»«mo»=«/mo»«mfenced open=¨[¨ close=¨]¨»«mi»Xe«/mi»«/mfenced»«mo»§#160;«/mo»«mn»6«/mn»«msup»«mi mathvariant=¨normal¨»s«/mi»«mn»2«/mn»«/msup»«/mrow»«/mstyle»«/math»" height="46" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -23px;" width="377" />&nbsp;

<img align="middle" alt="begin mathsize 14px style Ba yields Ba to the power of 2 plus sign and 2 e end style" class="Wirisformula" data-custom-editor="chemistry" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨ class=¨wrs_chemistry¨»«mstyle mathsize=¨14px¨»«mrow»«mi»Ba«/mi»«mo»§#8594;«/mo»«msup»«mi»Ba«/mi»«mrow»«mn»2«/mn»«mo»+«/mo»«/mrow»«/msup»«mo»+«/mo»«mn»2«/mn»«mi mathvariant=¨normal¨»e«/mi»«/mrow»«/mstyle»«/math»" height="15" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -1px;" width="97" />&nbsp;(melepas 2 elektron untuk tetap stabil)

&nbsp;

<img align="middle" alt="begin mathsize 14px style Cl presubscript 17 equals 1 s squared space 2 s squared space 2 p to the power of 6 space 3 s squared space 3 p to the power of 5
Cl presubscript 17 equals open square brackets Ne close square brackets space 3 s squared space 3 p to the power of 5 end style" class="Wirisformula" data-custom-editor="chemistry" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨ class=¨wrs_chemistry¨»«mstyle mathsize=¨14px¨»«mrow»«mmultiscripts»«mi»Cl«/mi»«mprescripts/»«mn»17«/mn»«none/»«/mmultiscripts»«mo»=«/mo»«mn»1«/mn»«msup»«mi mathvariant=¨normal¨»s«/mi»«mn»2«/mn»«/msup»«mo»§#160;«/mo»«mn»2«/mn»«msup»«mi mathvariant=¨normal¨»s«/mi»«mn»2«/mn»«/msup»«mo»§#160;«/mo»«mn»2«/mn»«msup»«mi mathvariant=¨normal¨»p«/mi»«mn»6«/mn»«/msup»«mo»§#160;«/mo»«mn»3«/mn»«msup»«mi mathvariant=¨normal¨»s«/mi»«mn»2«/mn»«/msup»«mo»§#160;«/mo»«mn»3«/mn»«msup»«mi mathvariant=¨normal¨»p«/mi»«mn»5«/mn»«/msup»«mspace linebreak=¨newline¨/»«mmultiscripts»«mi»Cl«/mi»«mprescripts/»«mn»17«/mn»«none/»«/mmultiscripts»«mo»=«/mo»«mo»[«/mo»«mi»Ne«/mi»«mo»]«/mo»«mo»§#160;«/mo»«mn»3«/mn»«msup»«mi mathvariant=¨normal¨»s«/mi»«mn»2«/mn»«/msup»«mo»§#160;«/mo»«mn»3«/mn»«msup»«mi mathvariant=¨normal¨»p«/mi»«mn»5«/mn»«/msup»«/mrow»«/mstyle»«/math»" height="46" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -23px;" width="172" />&nbsp;

<img align="middle" alt="begin mathsize 14px style Cl and e yields Cl to the power of minus sign end style" class="Wirisformula" data-custom-editor="chemistry" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨ class=¨wrs_chemistry¨»«mstyle mathsize=¨14px¨»«mrow»«mi»Cl«/mi»«mo»+«/mo»«mi mathvariant=¨normal¨»e«/mi»«mo»§#8594;«/mo»«msup»«mi»Cl«/mi»«mo»-«/mo»«/msup»«/mrow»«/mstyle»«/math»" height="11" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -1px;" width="77" />&nbsp;(menerima 1 elektron untuk tetap stabil)

maka,

<img align="middle" alt="begin mathsize 14px style Ba to the power of 2 plus sign and Cl to the power of minus sign yields Ba Cl subscript 2 end style" class="Wirisformula" data-custom-editor="chemistry" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨ class=¨wrs_chemistry¨»«mstyle mathsize=¨14px¨»«mrow»«msup»«mi»Ba«/mi»«mrow»«mn»2«/mn»«mo»+«/mo»«/mrow»«/msup»«mo»+«/mo»«msup»«mi»Cl«/mi»«mo»-«/mo»«/msup»«mo»§#8594;«/mo»«msub»«mi»BaCl«/mi»«mn»2«/mn»«/msub»«/mrow»«/mstyle»«/math»" height="19" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -5px;" width="122" />

Jadi, senyawa yang terjadi adalah&nbsp;<img align="middle" alt="begin mathsize 14px style Ba Cl subscript 2 end style" class="Wirisformula" data-custom-editor="chemistry" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨ class=¨wrs_chemistry¨»«mstyle mathsize=¨14px¨»«msub»«mi»BaCl«/mi»«mn»2«/mn»«/msub»«/mstyle»«/math»" height="15" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -5px;" width="36" />.<img align="middle" alt="space" class="Wirisformula" data-custom-editor="chemistry" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨ class=¨wrs_chemistry¨»«mo»§#160;«/mo»«/math»" height="5" role="math" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAQAAAAFCAYAAABirU3bAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAABGJhU0UAAAAEx0lWhwAAAAxJREFUeNpjYKABAAAAVQAB8vOvGAAAAGR0RVh0TWF0aE1MADxtYXRoIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8xOTk4L01hdGgvTWF0aE1MIiBjbGFzcz0id3JzX2NoZW1pc3RyeSI+PG1vPiYjeEEwOzwvbW8+PC9tYXRoPjXNO/4AAAAASUVORK5CYII=" style="max-width: none; vertical-align: -1px;" width="4" />&nbsp;

Ramalkan rumus senyawa ion dari pasangan unsur&nbsp;<img align="middle" alt="begin mathsize 14px style Ba presubscript 56 end style" class="Wirisformula" data-custom-editor="chemistry" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨ class=¨wrs_chemistry¨»«mstyle mathsize=¨14px¨»«mmultiscripts»«mi»Ba«/mi»«mprescripts/»«mn»56«/mn»«none/»«/mmultiscripts»«/mstyle»«/math»" height="15" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -5px;" width="28" />&nbsp;dengan&nbsp;<img align="middle" alt="begin mathsize 14px style Cl presubscript 17 end style" class="Wirisformula" data-custom-editor="chemistry" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨ class=¨wrs_chemistry¨»«mstyle mathsize=¨14px¨»«mmultiscripts»«mi»Cl«/mi»«mprescripts/»«mn»17«/mn»«none/»«/mmultiscripts»«/mstyle»«/math»" height="15" role="math" src="data:image/png;base64,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" style="max-width: none; vertical-align: -5px;" width="26" />!<img align="middle" alt="undefined" class="Wirisformula" data-custom-editor="chemistry" data-mathml="«math xmlns=¨http://www.w3.org/1998/Math/MathML¨ class=¨wrs_chemistry¨»«mo»§#160;«/mo»«/math»" height="5" role="math" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAQAAAAFCAYAAABirU3bAAAACXBIWXMAAA7EAAAOxAGVKw4bAAAABGJhU0UAAAAEx0lWhwAAAAxJREFUeNpjYKABAAAAVQAB8vOvGAAAAGR0RVh0TWF0aE1MADxtYXRoIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8xOTk4L01hdGgvTWF0aE1MIiBjbGFzcz0id3JzX2NoZW1pc3RyeSI+PG1vPiYjeEEwOzwvbW8+PC9tYXRoPjXNO/4AAAAASUVORK5CYII=" style="max-width: none; vertical-align: -1px;" width="4" />

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