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3 years ago

The total number of electrons in a neutral atom of every element is always equal to the atom's

Chemistry

1 answer:

uysha [10]3 years ago

6 0

Answer:

3. number of protons

Explanation:

In a neutral atom, the total number of electrons in such an atom is equal to the number of protons.

There are three fundamentally known sub-atomic particles in an atom. They are:

Protons which are positively charged and are contained in the nucleus

Neutrons which do not carry any charges

Electrons which are negatively charged.

Both of protons and neutrons are located in the nucleus.

Atoms are charged by gaining of losing electrons.

When an atom gains electrons, they become negatively charged and the number of electrons in them becomes more than that of protons.

When they lose electrons, they become positively charged as the the number of protons is more.

Neutral atoms have equal number of protons and electrons in them.

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What is the molar mass of CH2O2?

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Here are approximately 15 milliliters (mL) in 1 tablespoon (tbsp).

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<span>If there are 15 mL in 1 tablespoon, then 3 tablespoons should have triple the volume as originally stated.
Note in all of the four choices, the units simplify to mL because tbsp x ml/tbsp = mL (tbsp/tbsp = 1)
The second and third choice give ultimately the same, incorrect value. The fourth option gives an incorrect fraction - there are not 15 mL for every tablespoon. The correct answer is 1 tbsp x 15mL/3tbsp</span>

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3 years ago

Is O2 always a double bond?

Dima020 [189]

O-O single bonds and H-O single bonds in $\text{H}_2\text{O}_2$ molecules.
H-O single bonds in $\text{H}_2\text{O}$ molecules.
O=O double bonds in $\text{O}_2$ molecules.

<h3>Explanation</h3>

How many valence electrons do atoms in each molecule need for them to be stable?

Each H atom needs two valence electrons to be stable.
Each atom of an element other than H needs eight valence electron to be stable.

There are two H atoms and two O atoms in an $\text{H}_2\text{O}_2$ molecule. Atoms in each $\text{H}_2\text{O}_2$ need $2 \times 1 + 2\times 2 = 6$ more electrons to be stable.
There are two H atoms and one O atom in an $\text{H}_2\text{O}$ molecule. Atoms in each $\text{H}_2\text{O}$ molecule need $2 \times 1 + 2= 4$ more electrons to be stable.
There are two O atoms in an $\text{O}_2$ molecule. Atoms in each $\text{O}_2$ molecule need $2 \times 2 = 4$ more electrons to be stable.

How many chemical bonds in each molecule?

Each chemical bond adds one valence electron to each bonding atom. Each chemical bond connects two atoms. As a result, each chemical bond adds two valence electrons to the molecule.

Each $\text{H}_2\text{O}_2$ molecule needs $6 / 2 = 3$ chemical bonds.
Each $\text{H}_2\text{O}$ molecule needs $4 / 2 = 2$ chemical bonds.
Each $\text{O}_2$ molecule needs $4 /2= 2$ chemical bonds.

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Ierofanga [76]

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Explanation:

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