What is the correct notation for a calcium ion whose outershell is a full octet?

1 answer:

8 0

<span>Ca^(2+). Calcium is an alkaline earth metal with an atomic number of 20. Its electronic configuration is (2, 8, 8, 2). From the electronic configuration it would be observed that calcium has two valence electrons. Calcium shares these two electrons with non metals like sulphur in an ionic bond to obtain an outer shell which is full octet. Let me use Sulphur. When calcium gives out its two valence electrons its electronic configuration becomes (2, 8, 8) thereby obtaining a stable out shell and the calcium ion becomes Ca^(2+). The sulphur also obtains a stable octet because it has 6 valence electron initially.</span>

You might be interested in

How many total atoms are there is a sugar molecule

Tju [1.3M]

Answer:

The white stuff we know as sugar is sucrose, a molecule composed of 12 atoms of carbon, 22 atoms of hydrogen, and 11 atoms of oxygen (C12H22O11). Like all compounds made from these three elements, sugar is a carbohydrate

7 0

2 years ago

If the pressure, volume, and temperature of a gas are known, which can most likely be found by using the ideal gas law?

Zolol [24]

The correct answer should be: the molar amount of the gas.

8 0

2 years ago

Antacids are used to relieve heartburn and sour stomach. Products like these commonly contain substances such as Mg(OH)2, Al(OH)

Leokris [45]

Answer:

They all react with acids.

Explanation:

Thus, they decrease the concentration of stomach acid and provide heartburn relief.

The equations for the reactions are:

Mg(OH)₂ + 2HCl ⟶ MgCl₂ + 2H₂O
Al(OH)₃ + 3HCl ⟶ AlCl₃ + 3H₂O
CaCO₃ +2HCl ⟶ CaCl₂ + H₂O + CO₂

6 0

3 years ago

The ph of coffee is 5.6. The ph of grapefruit juice is 2.6. This means that the proton concentration in coffee is

Brrunno [24]

pH scale is used to measure the acidity or alkalinity on a scale of 0-14 where 0-6.9 is the acidic region , 7.1-14 is the basic region and 7 is for the neutral substance. We can calculate the concentration of proton from pH.

$pH=-log[H^+]$