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GrogVix [38]
3 years ago
6

PLEASEEE HELPPPP ASAP!!

Chemistry
2 answers:
Goshia [24]3 years ago
8 0

Atoms are made up of three subatomic particles called protons, neutrons, and electrons.

Protons and neutrons are located in the nucleus.

All protons have a positive charge.

All neutrons have no charge or are neutral.

Electrons orbit around the nucleus and have a negative charge.

Firlakuza [10]3 years ago
4 0

electrons

protons

neutrons

nucleus

positive

neutral

negative

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<u>Answer:</u>

<u>For a:</u> The isotopic representation of iodine is _{53}^{131}\textrm{I}

<u>For b:</u> The isotopic representation of cesium is _{55}^{137}\textrm{Cs}

<u>For c:</u> The isotopic representation of strontium is _{38}^{52}\textrm{Sr}

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The isotopic representation of an atom is: _Z^A\textrm{X}

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  • <u>For a:</u>

We are given:

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Thus, the isotopic representation of iodine is _{53}^{131}\textrm{I}

  • <u>For b:</u>

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Number of neutrons = 82

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Thus, the isotopic representation of cesium is _{55}^{137}\textrm{Cs}

  • <u>For c:</u>

We are given:

Number of neutrons = 52

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Mass number = 38 + 52 = 90

Thus, the isotopic representation of strontium is _{38}^{52}\textrm{Sr}

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