What element has 18 protons and 18 neutrons?
Argon
is a Group 0 element, on the Periodic Table, with 18 protons in the nucleus.
What is the name of an element with 18 protons 22 neutrons and 18 electrons?
The chemical symbol for
Argon
. A 2 dimensional representation of a Argon atom with 18 protons and 22 neutrons in the nucleus and 18 electrons orbiting the nucleus.
Can chlorine have 18 protons?
Isotopes are atoms with the same number of protons (in the case of chlorine that means 17 protons) but different numbers of neutrons. Chlorine has two common isotopes, Chlorine-35 and Chlorine-37.
Chlorine-35 has 17 protons and 18 neutrons
and occurs in nature about 75% of the time.
How many neutrons are in argon 18?
| Element Argon | Number of neutrons (typical isotopes) 36; 38; 40 | Number of electrons 18 | Electron configuration [Ne] 3s2 3p6 | Oxidation states 0 |
|---|
What element has 18 as its atomic number?
Argon
– Element information, properties and uses | Periodic Table.
| Atomic Number Symbol Atomic Weight (amu, g/mol) | 17 Cl 35.453 | 19 K 39.0983 | 18 Ar 39.948 | 20 Ca 40.08 |
|---|
Ca
2 +
represents an ion with 20 protons and 18 electrons.
So, if an atom of titanium has a different number fo electrons, then said atom is actually an ion, meaning that it carries a net charge. For example, titanium can lose four electrons to form the titanium(IV) cation,
Ti4+
. This ion has 22 protons and 18 electrons.
We are told that the ion also has 16 neutrons, meaning the mass number of the ion is 16 + 16 = 32. Because the ion has 16 protons and 18 electrons, its net charge is 2–. Thus, the symbol for the ion is
32S2–
.
39.948 u
Atoms and isotopes
However an element’s mass numbers can vary, which means that it can have different numbers of neutrons. So although
chlorine has a mass number of 35
which means it has 18 neutrons, it can also have a mass number of 37, which means it has 20 neutrons.
For example, every chlorine atom has 17 electrons and
17 protons
; its atomic number is 17. However, three out of four chlorine atoms weigh 35 amu (17 protons and 18 neutrons) and the fourth weighs 37 amu (17 protons and 20 neutrons). These are the isotopes of chlorine.
36
The nucleus consists of 36 protons (red) and
48 neutrons
(yelow).
A noble gas, argon is inert and colorless until an electric current excites it to
a rich sky-blue glow
. As one of the least expensive noble gases, dense argon is often used as a shield gas to protect against oxidation.
18
Krypton is used commercially
as a filling gas for energy-saving fluorescent lights
. It is also used in some flash lamps used for high-speed photography. Unlike the lighter gases in its group, it is reactive enough to form some chemical compounds. For example, krypton will react with fluorine to form krypton fluoride.
Answer and Explanation:
Chlorine-35
has 17 protons and 18 neutrons.
Argon
– Element information, properties and uses | Periodic Table.
