1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Kryger [21]
3 years ago
9

The noble gas electron configuration for Ca2+ ion is identical with:______.

Chemistry
1 answer:
algol [13]3 years ago
4 0

Answer:

D. Ar.

Explanation:

The<em> </em><em>electron configuration</em><em> of the atom reflects how the electrons are distributed among the various atomic orbitals</em>. Just as for neutral atoms, we use the Pauli exclusion principle and Hund’s rule in writing the ground-state electron configurations of cations and anions.

<u>Ions formed from atoms of most representative elements have the noble-gas outer electron configuration of ns²np⁶.</u> In the formation of a cation from the atom of a representative element, one or more electrons are removed from the highest occupied n shell. The electron configuration of calcium and its ion is as follows:

Ca: [Ar]4s²                           Ca²⁺ : [Ar]

You might be interested in
What is the oxidation number of pt in k2ptcl6?
padilas [110]
Your compound is K_{2}PtCl_{6}.

Remember that the oxidation numbers in a neutral compound must add up to zero. Cl has an oxidation number of -1 because it is a halogen K has an oxidation number of +1 because it is an alkali metal, which exhibits an oxidation state of +1 in compounds.

Since you have 6 atoms of Cl, you have -1(6) = -6 for the Cl. Since you 2 atoms of K, you have +1(2) = +2 for the K. The oxidation number of Pt must make all the oxidation numbers add up to zero:
+2 + (-6) + oxidation number of Pt = 0
-4 + oxidation number of Pt = 0
Oxidation number of Pt = 4
4 0
4 years ago
What is the normal cd 4 count
krok68 [10]
The normal CD4 count cells are a type of blood cell that is part of your immune system. They are a type of white blood cell (lymphocyte). CD4 cells are sometimes called T-helper cells or T-cells.......
...
7 0
4 years ago
The atomic mass of an element is the ____.
hjlf
D . average of the mass number and the atomic number for the element.
8 0
3 years ago
Which statement about Bohr’s model of the atom is false?
AfilCa [17]

Answer:

Bohr o saka mi ad ha piebald webs ldb

Explanation:

3 0
3 years ago
Read 2 more answers
What happens to plates at divergent boundaries?
Lina20 [59]

Answer: A divergent boundary occurs when two tectonic plates move away from each other. Along these boundaries, earthquakes are common and magma (molten rock) rises from the Earth's mantle to the surface, solidifying to create new oceanic crust. ... Two plates sliding past each other forms a transform plate boundary.

5 0
3 years ago
Other questions:
  • 2H2 + O2 → 2H2O
    10·1 answer
  • Water acts as a<br> solvent<br> solute<br> solution<br> mixture
    7·1 answer
  • What is the difference between Na and Na+
    9·1 answer
  • Which word describes the forces acting on the car?
    6·1 answer
  • Which part of the atom forms chemical bonds?
    12·2 answers
  • Which of the following scientists was the first to determine the
    15·1 answer
  • Draw the structure(s) of the major organic product(s) of the following reaction. 1. lithium diisopropylamide / hexane 2. 1 eq. C
    14·1 answer
  • ¿De que dependen las propiedades del grafeno?
    12·1 answer
  • Help asapp plzz!!!!
    8·1 answer
  • CER sentence starter
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!