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UNO [17]
3 years ago
9

[03.04]When one atom of potassium (K) combines with one atom of fluorine (F), an ionic bond forms, resulting in potassium fluori

de (KF). Which of the following describes the arrangement of valence electrons in a bond between K and F?
The valence electrons are shared equally between K and F.
The valence electrons spend more time around the atom of K.
The valence electrons spend more time around the atom of F.
The valence electrons are given up by the K and gained by the F.
Chemistry
1 answer:
dybincka [34]3 years ago
3 0
Heyo, I believe that the answer would be D. The valence electrons are given up by the K and gained by the F.
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Salsk061 [2.6K]

Answer:

d= 50.23 g/cm³

Explanation:

Given data:

radius = 137.9 pm

mass is = 5.5 × 10−22 g

density = ?

Solution:

volume of sphere= 4/3π r³

First of all we calculate the volume:

v= 4/3π r3

v= 1.33× 3.14× (137.9)³

v= 1.33 × 3.14 × 2622362.939 pm³

v= 1.095 × 10∧7 pm³

v= 1.095 × 10∧-23 cm³

Formula:

Density:

d=m/v

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8 0
3 years ago
Match each element or compound with the appropriate symbol or molecular formula. Carbon dioxide CO2 carbon o oxygen Н H water с
Furkat [3]

Answer:

Carbon dioxide ---> CO₂

Water ----> H₂O

Carbon ---> C

Oxygen ----> O₂

Hydrogen ----> H₂

Explanation:

The molecular formula of an element or compound is a formula which represents the composition of a molecule of that element or compound. It consists of the formula representing the atoms present as well as the number of atoms of each element innthe compound written as subscript innthe formula of the element or compound.

The molecular formula of the given elements and compounds are given below:

Carbon dioxide ---> CO₂

Water ----> H₂O

Carbon ---> C

Oxygen ----> O₂

Hydrogen ----> H₂

The molecular formula of carbon dioxide shows that in a molecule of carbon dioxide, there are two atoms of oxygen and one atom of carbon present in a molecule of carbon dioxide.

The molecular formula of water shows that are two atoms of hydrogen and one atom of oxygen present in a molecule of water.

The molecular formula of carbon shows that there are one carbon atoms in a molecule of carbon.

The molecular formula of oxygen shows that there are two oxygen atoms in a molecule of oxygen gas.

The molecular formula of hydrogen shows that there are two molecules of hydrogen in a molecule of hydrogen gas.

7 0
3 years ago
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lakkis [162]

Complete question is;

What is true of synthesis and decomposition reactions?

A) Synthesis reactions require more energy than decomposition reactions.

B) Synthesis reactions produce more products than decomposition reactions.

C) Synthesis reactions are the opposite of decomposition reactions.

D) Synthesis reactions have fewer reactants than decomposition reactions.​

Answer:

C) Synthesis reactions are the opposite of decomposition reactions.

Explanation:

Correct answer is option C. This is because, Synthesis reactions are defined as those whereby substances are combined together to form larger molecules/compounds. Whereas, decomposition reactions are the opposite due to the fact that they involve the breakdown of two or more substances.

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