Atomic Number Of Cl

Atomic Number Of Cl
Atomic Number Of Chlorine 37
Atomic Number Of Chlorine 35
Cl Atomic Mass
Atomic Number Of Chlorine

What is the electron configuration of Cl-?

1 Answer

Explanation:

Based on the periodic table, the atomic number (#Z# of chlorine is 17. Since the atomic number is always equal to the number of protons or

#Z# = number of protons

and in ground state (no charge), the number of protons is equal to the number of electrons, then

Atomic Number: 17: Atomic Radius: 175 pm (Van der Waals) Atomic Symbol: Cl: Melting Point:-101.5 °C: Atomic Weight: 35.45: Boiling Point:-34.04 °C: Electron.

Atomic Number Of Cl

The atomic number (or proton number) of Cl is 17, so it has 17 protons. The mass of the chlorine-37 is 37, so 37-17=20 neutrons. As it is an atom it has no charge, so the number of protons must equal the number of electrons, so there are 17 electrons.
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. The atomic mass, or as it is properly called, the RELATIVE atomic mass, is a weighted average of the masses of all the isotopes of chlorine.

#Z# = number of protons = number of electrons (ground state)

Therefore, the ground state electron configuration of the element, chlorine is:

Atomic Number Of Chlorine 37

#1s^2##2s^2##2p^6##3s^2##3p^5# = #color (green) '17 electrons'# (just add the superscripts)

For a ground state element to become an ion, it has to either gain or lose an electron in its outermost orbital. Elements usually do this in order to gain the electron stability of the noble gases (octet rule).

Now, for you to be not confuse, you always have to remember that:

(1) electron gain will result to a #color (red) 'negative'# charge (#color (red) (-)#), and

(2) electron loss will result to a #color (blue) 'positive'# charge (#color (blue) (+)#), Ptltd driver download.

The chloride ion, #Cl^-#, has a charge of #color (red) (-1)#, meaning, it had gained 1 electron in its outermost orbital. The overall number of electrons is now 18.

Thus, the electron configuration for #Cl^-# should be

#1s^2##2s^2##2p^6##3s^2##3p^6# = #color (green) '18 electrons'#

Atomic Number Of Chlorine 35

Related questions

Molar mass of KCl = 74.5513 g/mol

This compound is also known as Potassium Chloride.

Convert grams KCl to moles or moles KCl to grams

Molecular weight calculation:
39.0983 + 35.453

Symbol	# of Atoms		Chlorine	Cl	35.453	1	47.555%
Potassium	K	39.0983	1	52.445%

Cl Atomic Mass

In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all of these products together. Silicon labs software usb devices driver download for windows.

Formula weights are especially useful in determining the relative weights of reagents and products in a chemical reaction. These relative weights computed from the chemical equation are sometimes called equation weights.

Using the chemical formula of the compound and the periodic table of elements, we can add up the atomic weights and calculate molecular weight of the substance.

A common request on this site is to convert grams to moles. To complete this calculation, you have to know what substance you are trying to convert. The reason is that the molar mass of the substance affects the conversion. This site explains how to find molar mass.

Atomic Number Of Chlorine

Finding molar mass starts with units of grams per mole (g/mol). When calculating molecular weight of a chemical compound, it tells us how many grams are in one mole of that substance. The formula weight is simply the weight in atomic mass units of all the atoms in a given formula.

The atomic weights used on this site come from NIST, the National Institute of Standards and Technology. We use the most common isotopes. This is how to calculate molar mass (average molecular weight), which is based on isotropically weighted averages. This is not the same as molecular mass, which is the mass of a single molecule of well-defined isotopes. For bulk stoichiometric calculations, we are usually determining molar mass, which may also be called standard atomic weight or average atomic mass.

If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. The percentage by weight of any atom or group of atoms in a compound can be computed by dividing the total weight of the atom (or group of atoms) in the formula by the formula weight and multiplying by 100.