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Chemistry

1 answer:

pychu [463]2 years ago

5 0

Earth orbits the sun 100,000 times closer than the Oort Cloud, at an average of 92,955,807 miles (149,597,870 km). The distance from Earth to the sun is called an astronomical unit, or AU, which is used to measure distances throughout the solar system.

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If the metal in the ionic compound is a transition element (with variable charge metal ions), the ionic charge is written as a R

spayn [35]

Answer : The name of ionic compound is, Copper(II) fluoride.

Explanation :

Ionic compound : It is defined as the compound which is formed when electron gets transferred from one atom to another atom.

Ionic compound are usually formed when a metal reacts with a non-metal.

The nomenclature of ionic compounds is given by:

1. Positive ion is written first.

2. The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.

3. In case of transition metals, the oxidation state are written in roman numerals in bracket in-front of positive ions.

$CuF_2$

$CuF_2$ is an ionic compound because copper element is a metal and fluorine element is a non-metal. The bond formed between a metal and a non-metal is always ionic in nature.

The oxidation state of copper in $CuF_2$ is, (+2)

Thus, the name of ionic compound is, Copper(II) fluoride.

8 0

2 years ago

Calculate the mass (in g) of 2.1 x 1024 atoms of W.

Monica [59]

Atomic mass W = 183.84 u.m.a

183.84 g ----------- 6.02x10²⁴ atoms
?? g ---------------- 2.1x10²⁴ atoms

2.1x10²⁴ x 183.84 / 6.02x10²⁴ =

3.860x10²⁶ / 6.02x10²⁴ = 641.30 g

hope this helps!

4 0

2 years ago

Which of the following elements would you expect to behave most like magnesium?

kvv77 [185]

Calcium. this is because Mg and calcium is in the same group. hence, they have similar chemical properties

8 0

2 years ago

Why is the number of electrons or charge of each ion useful information when predicting the products in replacement reactions?

olga nikolaevna [1]

In order to determine if the ion is positively charged or negatively charged

3 0

2 years ago

Dry ice placed in room temperature water causes a lot of bubbling in the

Irina-Kira [14]

Answer:

carbon dioxide I beleive.

Explanation:

dry ice is frozen liquid carbon dioxide and when it melts it gives off carbon dioxide gas.

7 0

2 years ago