Chemistry, 15.10.2019 04:30, niyah0623

List the number of protons, neutrons, and electrons in each pair of isotopes.
a. 6/3li, 7/3li
b. 42/20ca, 44/20 ca
c. 78/34se, 80/34se

Answers: 3

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The number of protons, neutrons, and electrons in each pair of isotopes is as follows on the basis of their atomic mass and the atomic number:

=> For option A.) - 6/3Li, 7/3Li

Lithium-6:

The atomic mass is 6 and the atomic number is 3 which means the number of protons is 3 and the number of neutrons is 3 and as it has no charge then, the number of electrons is equal to the number of protons that is 33 protons, 3 electrons, and 3 neutrons.

Lithium 7:

The atomic mass is 7 and the atomic number is 3 which means the number of protons is 3 and the number of neutrons is 4 and as it has no charge then, the number of electrons is equal to the number of protons that is 3.3 protons, 3 electrons, and 4 neutrons.

On the same logic, we can get the number of protons, neutrons, and electrons in each pair of isotopes

=> For option B.) 42/20Ca, 44/20 Ca

Calcium-42:

20 protons, 20 electrons, and 22 neutrons.

Calcium-44:

20 protons, 20 electrons, and 24 neutrons.

=> For option C.) 78/34Se, 80/34Se

Selenium-78:

34 electrons, 34 electrons, and 44 neutrons.

Selenium-80:

34 protons, 34 electrons, and 46 neutrons.

Learn more about sub-atomic particles:

link

answered: AutumnJoy12

The answer to your question is:

Explanation:

a. 6/3Li, 7/3Li

Protons Neutrons Electrons

⁶₃ Li 3 3 3

⁷₃ Li 3 4 3

b. 42/20Ca, 44/20 Ca

⁴² ₂₀ Ca 20 22 20

⁴⁴ ₂₀ Ca 20 24 20

c. 78/34Se, 80/34Se

⁷⁸₃₄Se 34 44 34

⁸⁰₃₄Se 34 46 34

answered: Guest

the correct name for the n3 ion is azide. azide is a polyatomic anion with a -1 charge and is written as n3 -1. it consists of three nitrogen atoms bonded together. hope i . let me know if you need anything else.

answered: Guest

the answer is 303.15 or 303