What element has 18 electrons and a charge of?

A certain element forms an ion with 18 electrons and a charge of +2. … Recall that atoms have the same number of electrons as protons, and the atomic number of an atom is the number of protons it has. So, the atom in question is the atom whose atomic number is 20…..that's calcium (Ca).

What ion has a total of 18 electrons?

Argon has 18 protons and is a neutral atom, so it also has 18 electrons.

What ion has 18 valence electrons?

Therefore electronic configuration of copper ion Cu+ 2,8,18. This means that Cu+ has 18 electrons in its outermost shell.

What has 18 electrons and protons?

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.

Which of the following elements has 18 neutrons?

chlorine Some atoms of chlorine have 18 neutrons in their nuclei.

What cation with a 1+ charge has 18 electrons?

Sodium ion on right has 17 protons and 18 electrons, with a -1 overall charge.

How many protons and electrons does ni2+ have?

But in Ni2+ there is a shortage of two electrons but the protons are reminded the same so the charge over Ni2+ is +2 for two extra protons cause the electrons are 26 but the number of protons is still 28.

Which element has 18 electrons in the outermost shell?

Palladium Palladium is the only element in the periodic table that has 18 electrons in its outermost shell.

Can an atom have 18 valence electrons?

0:204:41Electron shells Elements 1-18 – YouTubeYouTube

What element has 18 as its atomic number?

Argon Argon – Element information, properties and uses | Periodic Table.

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.

What element has 18 electrons when it forms an anion with a 2 − charge?

calcium If an ion has a 2+ charge then it must have lost electrons to form the cation. If the ion has 18 electrons and the atom lost 2 to form the ion, then the neutral atom contained 20 electrons. Since it was neutral, it must also have had 20 protons. Therefore the element is calcium.

How many electrons does ni2+ have?

0:581:45How to find Protons & Electrons for the Ni, Ni2+, and Ni3+ – YouTubeYouTube

What does ni2+ mean?

Nickel ion requiring two electrons to return to its elemental state. ( NCI Thesaurus/CRCH)

Which ion has 18 electrons in the outermost orbit?

Solution : (a) The electronic configuration of Cu, Th, Cs and K are Cu(29) = 2, 8,, 18, 1 `Cu^(+) = 2,8,18` Th(90)= 2, 8, 18, 32, 18, 10, 2 `Th^(4+)=2, 8, 18, 32, 18, 8 Cs(55) = 2, 8, 18, 18, 8,1 `Cs^(+)=2, 8, 18, 18, 8` K(19)=2, 8, 8, 1 `K^(+)=2, 8, 8` Thus, `Cu^(+)` has 18 …

Which element has 18 electrons in the outermost energy level?

Palladium is the only element in the periodic table that has 18 electrons in its outermost shell.

Which of the following follows 18-electron rule?

Compounds that obey the 18-electron rule are typically "exchange inert". Examples include (Co(NH3)6)Cl3, Mo(CO)6, and (Fe(CN)6)4−.

What element has a mass number of 18?

The Elements, sorted by Atomic Mass

Atomic Number	Symbol	Atomic Weight (amu, g/mol)
17	Cl	35.453
19	K	39.0983
18	Ar	39.948
20	Ca	40.08

How many protons does element 18 have?

2.1 Electrons, Protons, Neutrons, and Atoms

Element	Symbol	Atomic No.
Argon	Ar	18
Potassium	K	19
Calcium	Ca	20

Which of the following element has the number of 18 neutrons?

Some atoms of chlorine have 18 neutrons in their nuclei.

What is the charge on a calcium ion with 18 electrons?

2+ charge For example, a neutral calcium atom, with 20 protons and 20 electrons, readily loses two electrons. This results in a cation with 20 protons, 18 electrons, and a 2+ charge.

What does Ni2+ mean?

Nickel ion requiring two electrons to return to its elemental state. ( NCI Thesaurus/CRCH)

How many protons and electrons does Ni2+ have?

Which of the following has 18 electrons in penultimate shell?

What do you call an element if it has 18 electrons in the penultimate shell and 3 electrons in the outermost shell? The correct answer is p-block element.

Which of the following shell have 18 electrons?

Palladium is the only element in the periodic table that has 18 electrons in its outermost shell.

Why do transition metals have 18 electrons?

The 18 electron rule states that, For a transition element to be stable it needs to have 18 electrons in its valence shell so that they have the configuration of an inert gas, and that they form chemical bonds in order to attain this state.

What is 18-electron rule Explain with examples?

Compounds that obey the 18-electron rule are typically "exchange inert". Examples include (Co(NH3)6)Cl3, Mo(CO)6, and (Fe(CN)6)4−. In such cases, in general ligand exchange occurs via dissociative substitution mechanisms, wherein the rate of reaction is determined by the rate of dissociation of a ligand.

What is the element with an atom number of 18?

Ar Argon The Elements, sorted by Atomic Number

Atomic Number	Symbol	Name
16	S	Sulfur
17	Cl	Chlorine
18	Ar	Argon
19	K	Potassium

What is the element with an atomic number of 18?

Ar Argon The Elements, sorted by Atomic Number

Atomic Number	Symbol	Name
18	Ar	Argon
19	K	Potassium
20	Ca	Calcium
21	Sc	Scandium

How many total electrons are in a ni2+ ion?

0:141:45How to find Protons & Electrons for the Ni, Ni2+, and Ni3+ – YouTubeYouTube