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3 years ago

Which of the following pairs of elements is most likely to form an ionic compound?

Chemistry

1 answer:

love history [14]3 years ago

4 0

Answer:

Option A = sodium and bromine

Explanation:

Sodium is metal while bromine is non metal. The bond formed between them is ionic.

Ionic bond:

Ionic bond is formed by the complete transfer of electron form metal to non metal.

Sodium is belongs to the group one while bromine is present in group seventeen. The number of valance electron of bromine are seven. Bromine require one electron to complete the octet, while sodium lose its one valance electron to gain noble gas stable electronic configuration. Thus sodium transfer its electron to bromine and gain positive charge and bromine gain its electron and form negative ion. The forces present between them are electrostatic forces which are very strong.

Na⁺Br⁻

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A 6.68-g aqueous solution of isopropyl alcohol contains 3.97 g of isopropyl alcohol. What is the mass percentage of isopropyl al

Sphinxa [80]

Answer : The mass percentage of isopropyl alcohol in the solution is, 59.4 %

Explanation :

To calculate the mass percentage of isopropyl alcohol in the solution, we use the equation:

$\text{Mass percent of isopropyl alcohol}=\frac{\text{Mass of isopropyl alcohol}}{\text{Mass of isopropyl alcohol solution}}\times 100$

Mass of isopropyl alcohol = 6.68 g

Mass of isopropyl alcohol solution = 3.97 g

Putting values in above equation, we get:

$\text{Mass percent of isopropyl alcohol}=\frac{3.97g}{6.68g}\times 100=59.4\%$

Thus, the mass percentage of isopropyl alcohol in the solution is, 59.4 %

6 0

3 years ago

A) 3 and 4<br><br> b) 2 and 3<br><br> c) 1 and 2<br><br> d) 1 and 4

tatiyna

<h3>Answer:</h3>

d) 1 and 4

<h3>Explanation:</h3>

Elements are made up of particles known as atoms.
Atoms of the same element have the same properties as the element.
The atoms of an element may differ in terms of the number of neutrons and have a different mass number, such atoms are known as isotopes.
However, the isotopes have an equal number of protons or atomic number.
In this case, atom 1 has a mass number of 20 and an atomic number of 10 while atom 4 has a mass number of 21 and an atomic number of 21.
Therefore, atom 1 and 4 are isotopes of element E.

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3 years ago

The atomic number of an atom is

frosja888 [35]

Answer:

b, the number of protons added to the number of neutrons

Explanation:

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3 years ago

The city of Manila held a trial run its newest program which is the Acid and Base Tournament. All of the participants enjoyed th

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Answer:

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Explanation:

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3 years ago

Which set of elements has similar binding properties?

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Answer:

B. K,Ca, and Sc

Explanation:

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2 years ago