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3 years ago

Fluorine (F) has seven electrons in its outermost shell. Fluorine _____.

2 answers:

6 0

2. F is non-metal, because it has seven electrons (more that 3)
3.It fills its shell by gaining one electron, because it is easier to gain 1 e⁻ than to loose 7 e⁻.
4. It becomes a negatively charged ion, because atom of F is neutral, it has "0" charge, and it takes one negatively charged electron(-1). (0 +(-1)= -1)

Anika [276]3 years ago

3 0

Answer:

is a nonmetal

fills its shell by gaining one electron

becomes a negatively charged ion

Explanation:

Fluorine is in group 7 of the periodic table and in period 2. Elements found in group 7 are mostly non metals. This non metals mostly gain electron during bonding with other atom of elements.

Fluorine fills it outer shell by gaining a single electron. The valency electron of Fluorine is 7 . It can easily attract 1 electron to it self to attain the octet rule. This is why most non metal in group 7 are very reactive .

Fluorine easily become an anion as they gain single electron. The charge become negatively charged. It gains single charge and possess a charge of -1.

The electronic configuration is 2 7. The atomic number of Florine is 9.

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How many grams of hydrogen are contained in 2.00 mol of C6H7N

Setler [38]

Answer:- 14.0 moles of hydrogen present in 2.00 moles of $[tex]C_6H_7N$ .

Solution:- We have been given with 2.00 moles of $C_6H_7N$ and asked to calculate the grams of hydrogen present in it. It's a two step conversion problem. In first step we convert the moles of the compound to moles of hydrogen as one mol of the compound contains 7 moles of hydrogen. In next step the moles are converted to grams on multiplying the moles by atomic mass of H. The calculations are shown as:

$2.00molC_6H_7N(\frac{7molH}{1molC_6H_7N})(\frac{1.0gH}{1molH})$

= 14.0 g H

So, there are 14.0 g of hydrogen in 2.00 moles of $C_6H_7N$ .

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3 years ago

How many molecules are in 3.50 moles of H2O

Debora [2.8K]

Answer:

2.11 x 10²⁴ molecules.

Explanation:

It is known that every 1.0 mole of a molecule contains Avogadro's number of molecules (NA = 6.022 x 10²³).

Using cross multiplication:

1.0 mole of H₂O contains → 6.022 x 10²³ molecules.

3.5 mole of H₂O contains → ??? molecules.

∴ 3.5 mole of H₂O contain = (3.5 mol)(6.022 x 10²³) = 2.11 x 10²⁴ molecules.

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Water has a higher boiling point than acetone does. Which of the following statements about water and acetone in the liquid stat

Semenov [28]

Answer:

Water's boiling point is higher than acetone's one due to the stronger intermolecular forces it has in liquid phase.

Explanation:

Hello.

In this case, since no options are given we can infer from the statement that due to water's higher boiling point than acetone we can conclude that when they are in liquid state, water has stronger intermolecular forces which allow its particles to be held in a stronger way in comparison to the acetone's molecules, for that reason, more energy will be required in order to separate them and promote the boiling process, which is attained via increasing the temperature. Besides, less energy will be required for the separation of the acetone's molecules in order to boil it when liquid, therefore, a lower temperature is required.

In such a way, we can sum up that water's boiling point is higher than acetone's one due to the stronger intermolecular forces it has in liquid phase.

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