What is the charge of an ion with 20 protons and 18 electrons?

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 element has 18 protons 20 neutrons?

Explanation: You gots Z=18 , the atomic number, where Z is the number of nuclear protons. The number of protons defines the element….and thus we got calcium…. ….and with 20 neutrons we got the 38Ca isotope….the which is rather short-lived….

What element is described by 20 protons 20 neutrons and 18 electrons?

The most common form of calcium has 20 protons, 20 neutrons, and 20 electrons.

Which of these ions has 18 electrons?

When copper loses one electron then it becomes a positive ion that is Cu+. Therefore electronic configuration of copper ion Cu+ 2,8,18. This means that Cu+ has 18 electrons in its outermost shell.

What is the atomic mass of an element that has 18 electrons and 20 neutrons its charge is?

Because the atomic number of an atom is same as the proton number of the atoms which means the atomic mass of the atom equal to 18. C) Correct. Because the mass number of an atom is the sum of proton number and neutron number of the atom. So, 18 + 20 = 38.

What is the mass number of an element that has 18 protons 18 electrons and 20 neutrons?

Because the mass number of an atom is the sum of proton number and neutron number of the atom. So, 18 + 20 = 38.

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

What ion has 18 electrons 19 protons and 20 neutrons?

There are 19 protons, i.e. Z=19 . The element is NECESSARILY potassium.

Which ion has 18 electrons in outermost shell?

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 …