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The atomic number of oxygen is 8. So it has 8 protons. And O-18 isotope has 10 neutrons.

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How many protons and electrons does chlorine has?

Number of Protons = Number of electrons = 17.The number of neutrons depends on the isotope. Cl-35 and Cl-37 isotopes have 18 and 20 isotopes respectively.


What is the correct name in hyphen notation of the isotopes of phosporus that has 15 protons and 18 neutrons?

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No, oxygen-17 and oxygen-18 are different isotopes of oxygen. They differ in the number of neutrons each atom contains. Oxygen-17 has 8 protons and 9 neutrons while oxygen-18 has 8 protons and 10 neutrons.


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Do isotopes differ by number of electrons?

Isotopes differ by the number of protons.


What are elements with identical number for protons and different number of neutrons called?

The answer you are looking for is "isotopes" HOWEVER, please note you CAN NOT HAVE 2 elements with the same number of PROTONS. This is because the number of protons DEFINES an element. Isotopes are the SAME element but with differing numbers of neutrons.


How are isotopes identifield?

By the numbers of protons


Two isotopes of the element rubidium differ in their number of protons?

This statement is incorrect. Isotopes of an element have the same number of protons but differ in their number of neutrons. Rubidium, specifically, has two stable isotopes: Rb-85 and Rb-87, which both have 37 protons but different numbers of neutrons.


What is different about oxygen-17 and oxygen-18?

These are both isotopes of oxygen, meaning that they have different numbers of neutrons but the same number of protons.


What is the number of protons of Neptunium?

All the isotopes of neptunium has 93 protons.