Physics, 31.07.2019 07:30 andile64

Fluorine is more electronegative than oxygen because 1. the outer orbitals of fluorine are located further from the nucleus than the outer orbitals of oxygen. 2. the effective nuclear charge of fluorine is greater than that of oxygen. 3. the effective nuclear charge of oxygen is greater than that of fluorine. 4. the outer orbitals of oxygen are located closer to the nucleus than the outer orbitals of fluorine. 5. false; oxygen is more electronegative than fluorine.

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Fluorine and Oxygen are located in the same period of the periodic table, but different groups. This means that they both have the same number of electron shells, but the valence electrons are different. Fluorine has 7 valence electrons and Oxygen has 6 valence electrons.
Oxygen has 6 protons therefore has a nuclear charge of +6 and Fluorine has 7 protons so has a nuclear charge of +7. This shows that Fluorine has a higher nuclear charge than Oxygen therefore the attraction of the nucleus to valence electrons is higher in Fluorine than in Oxygen, as Fluorine has a higher nuclear charge than O.
the electrostatic attraction between nucleus and valence electrons of Fluorine is greater. Also higher the nuclear charge the more the pull is for the outer electrons so atomic radius decreases across the period. The size of Fluorine is smaller and charge is greater, the ratio of charge to size is greater in Fluorine that results in a strong pull of the valence electrons and even any electron that will be gained by Fluorine during bonding.

Correct response is 2. effective nuclear charge of Fluorine is greater than that of Oxygen

Answer from: sash0924

Option (2) is the correct answer.

Explanation:

Fluorine is smaller in size as compared to oxygen atom. So, fluorine being smaller has the ability to attract electrons towards itself.

Atomic number of fluorine is 9 and its electronic distribution is 2, 7. And, to attain stability fluorine just need one electron. Therefore, it is highly reactive in nature as to gain one electron is easy to gain 2 or more number of electrons.

On the other hand, atomic number of oxygen is 8 and its electronic distribution is 2, 6. So, in order to attain stability an oxygen atom needs to gain 2 electrons.

When an electron experiences net charge in an atom which consists of multiple electrons then it is known as effective nuclear charge.

Effective nuclear charge of fluorine is 5.10 and effective nuclear charge of oxygen atom is 4.45.

Thus, we can conclude that fluorine is more electronegative than oxygen because the effective nuclear charge of fluorine is greater than that of oxygen.

Answer from: Quest

found in the nucleus

has mass of one amu

Answer from: Quest

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

$v_j = v_1 + v_2 = 3.100 + 1.350 = 4.45 m/s$

now the speed of paul will be same as it is given as he is running on the ground

$v_p = 3.100 m/s$

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

$\delta t = \frac{d}{v_j} - \frac{d}{v_p}$

$\delta t = \frac{2080}{4.450} - \frac{2080}{3.100}$

$\delta t = -203.55 s$

so jerome will reach first and the time difference will be 203.55 s or 3.4 min

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