Asked By: Antonio Peterson Date: created: Nov 10 2021

How many valence electrons do elements in group 17 have

Answered By: Dylan Reed Date: created: Nov 12 2021

A: An atom of a group 17 element such as chlorine has seven valence electrons. It is “eager” to gain an extra electron to fill its outer energy level and gain stability. Group 16 elements with six valence electrons are almost as reactive for the same reason.

Asked By: Christopher Price Date: created: Sep 13 2022

What is the valency of Group 16

Answered By: Malcolm Hughes Date: created: Sep 14 2022

Because oxygen does not have a d-orbital to occupy more than two electrons. Hence, the common valency of this group is 2.

Asked By: Jesus Barnes Date: created: May 05 2022

How many valence electrons does group 18 have

Answered By: Kyle Gonzales Date: created: May 07 2022

The number of valence electrons

Periodic table group Valence Electrons
Group 15 (V) (pnictogens) 5
Group 16 (VI) (chalcogens) 6
Group 17 (VII) (halogens) 7
Group 18 (VIII or 0) (noble gases) 8**
Asked By: Jacob Collins Date: created: Jan 08 2022

What is the valence of Cl

Answered By: George Cooper Date: created: Jan 11 2022

Cl has 7 valence electrons.

Asked By: Evan Bailey Date: created: Aug 08 2021

What family has 8 valence electrons

Answered By: Philip Gonzales Date: created: Aug 09 2021

The Group 8A elements have a full octet of eight valence electrons in their highest-energy orbitals (ns2np6), so these elements have very little tendency to gain or lose electrons to form ions, or share electrons with other elements in covalent bonds.

Asked By: George Sanchez Date: created: Feb 27 2022

What is the valency of group 15

Answered By: Oscar Hall Date: created: Feb 27 2022

The group 15 elements consist of five valence electrons.

Asked By: Adam Turner Date: created: Sep 30 2021

What is the valency of Group 17 elements

Answered By: Harold Parker Date: created: Sep 30 2021

All the Group 17 elements have the same outer electronic configuration, and that is ns2 np5, where 'n' stands for the shell number. As can be seen from the electronic configuration, the outermost shell of the halogen atoms have 7 electrons; thus, their valency is 7.

Asked By: Anthony Lee Date: created: Jun 23 2022

What is the valency of element 17

Answered By: Mason James Date: created: Jun 26 2022

Valency of First 30 Elements

Element Atomic Number Valency
Valency of Silicon 14 4
Valency of Phosphorus 15 3
Valency of Sulphur 16 2
Valency of Chlorine 17 1

Asked By: Jeffery Walker Date: created: Sep 21 2022

What is number of valence electrons in group 18

Answered By: Landon Foster Date: created: Sep 22 2022

The number of valence electrons

Periodic table group Valence Electrons
Group 15 (V) (pnictogens) 5
Group 16 (VI) (chalcogens) 6
Group 17 (VII) (halogens) 7
Group 18 (VIII or 0) (noble gases) 8**
Asked By: Lucas Coleman Date: created: Jan 27 2022

What is the valency of elements in group 17 and 18

Answered By: Jose Perry Date: created: Jan 27 2022

Solution

Group 17 Group 18
2. They have seven valence electrons. They have eight valence electrons except helium which contains 2 electrons.
3. Their valency is 1. Their valency is zero.
4. They form diatomic molecules with general formula (X2). They are monoatomic gases under normal conditions.
Asked By: Ralph Peterson Date: created: Jan 28 2022

What kind of elements are in group 18

Answered By: Jose Baker Date: created: Jan 28 2022

noble gas, any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table. The elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og).

Asked By: Thomas Robinson Date: created: Jun 26 2022

How many valence electrons do the halogens have

Answered By: Harry Washington Date: created: Jun 26 2022

Halogens are among the most reactive of all elements. They have seven valence electrons, so they are very “eager” to gain one electron to have a full outer energy level.

Asked By: Nathan Hayes Date: created: Sep 01 2021

What elements has 7 valence electrons

Answered By: Brian Russell Date: created: Sep 02 2021

The family of elements having seven electrons in the valence shell is halogens, i.e., chlorine, fluorine, bromine, iodine, astatine.

Asked By: Cole Moore Date: created: Dec 06 2021

Does bromine have 7 valence electrons

Answered By: Fred Stewart Date: created: Dec 08 2021

Bromine has an electron configuration of 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5 the valence electrons are in the 4s and 4p orbitals giving Bromine 7 valence electrons.

Asked By: Jason Jackson Date: created: Aug 21 2022

What are two properties of halogens

Answered By: Howard Young Date: created: Aug 24 2022

Summary of Common Properties

  • They have very high electronegativities.
  • They have seven valence electrons (one short of a stable octet).
  • They are highly reactive, especially with alkali metals and alkaline earths.
  • Because they are so reactive, elemental halogens are toxic and potentially lethal.

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