# Does oxygen-18 have 18 protons?

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No. Oxygen always has 8 protons. Oxygen 18 has 8 protons and 10 neutrons (8 + 10 = 18)
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Chlorine

# What has 18 protons and 15 electrons?

Ar 3+ . At its neutral state Argon (Ar) has 18 protons and 18 electrons. In order to have 15 electrons it has lost three electrons. Therefore Ar will have a 3+ charge.

Argon.

# The isotope oxygen-18 has 18 protons?

No - O-18 has 8 protons and 10 neutrons for total in the nucleus of 18

# Which element has 18 protons?

Argon is the element with 18 protons. The number of protons of any given element is easily accessible by looking at a period table, usually in the upper portion of the squares

# Has 17 protons and 18 electrons?

Chlorine ion (Cl - ).

Argon.

# How many protons does oxygen-18 have?

Oxygen will always have 8 protons.

# 17 protons and 18 electrons?

While "Maybe you should open a science book and find out" is a good idea and makes me laugh, it does not answer the question. The answer is Cl-.

argon

# How many protons does fluorine-18 have?

An atom's atomic number gives its number of protons. Fluorine's atomic number is 9. Thus, it has 9 protons, regardless of isotope.

# What has 19 protons and 18 electrons?

Ionof Element number 19 is the potassium ion: K + Since 19(p + ) - 18(e - ) = 1 +
In Science

# How many protons does oxygen 18 have?

Oxygen 18 has 8 protons.
In Atoms and Atomic Structure

# What atom has 18 protons and 18 electrons?

Argon
In Atoms and Atomic Structure

# How many protons and neutrons does oxygen 18 have?

8 protons, 8 electrons and 10 neutrons
In Chemistry

# Do Oxygen-17 and oxygen-18 have different number of protons?

No, 17 O and 18 O have differing numbers of neutrons , which make them isotopes of oxygen, along with 16 O.
In Atoms and Atomic Structure

# How may protons neutrons and electrons does oxygen-18 have?

The isotope oxygen-18 has the mass number of 18. The atomic number of oxygen is 8, so all of its atoms, regardless of isotope, have 8 protons. In a neutral oxygen atom the num