Which electrons in a calcium atom in the ground state have the greatest effect on the chemical properties of calcium

Chemistry

1 answer:

Scrat [10]4 years ago

6 0

Answer is: the two electrons in the fourth shell.

Atomic number of calcium is 20, it means that it has 20 protons and 20 electrons, so atom of calcium is neutral.

Electron configuration of calcium atom: ₂₀Ca 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²; calcium has two valence electrons (4s²).

In reactions it lose those two electrons ang form cation with positive charge 2+.

Atomic number is the number of protons, which is characteristic of a chemical element.

Beryllium, magnesium,calcium and strontium are alkaline earth metals. The elements have very similar properties.

Alkaline earth metals have in common an outer s- electron shell (two electrons).

You might be interested in

What does an aluminum atom become when it loses its three valence electrons? a?

Artist 52 [7]

Aluminum atomic number 13 becomes Neon with an atomic number of 10 when it loses three valence electrons.

6 0

4 years ago

Does bacteria need water to live

Aleks [24]

No. bacteria only needs food to live along with other special needs depending on the type of bacteria

6 0

4 years ago

Calculate the mass of magnesium oxide formed when 3.0 grams of magnesium reacts with excess oxygen.

BlackZzzverrR [31]

Mg+O2=MgO
24 g. = 40 g
3 g. = x
$x = \frac{3 \times 40}{24} \\ x = 5 \: g$

3 0

3 years ago

I want to know if it is true or false

denpristay [2]

Answer:

wheres the question or picture

Explanation:

3 0

3 years ago

Read 2 more answers

What are the treatments for Down syndrome

noname [10]

Answer: While there is no cure for Down Syndrome, there are therapies, treatments, and educational support available to improve the quality of life of those affected. The exact course of treatment will depend on the individual, taking into account the person’s age, overall health, environment, and personal strengths and limitations. Some example of therapies available are: speech-language therapy, physical therapy, occupational therapy, and assistive technology.

5 0

4 years ago