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1 year ago

What is the name of the organization where Chris brown works?

Chemistry

1 answer:

Nitella [24]1 year ago

8 0

Answer: Chris Brown has launched a charity organization called the Symphonic Love Foundation.

Explanation:

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Identify each statement as true or false. Explain in every case.a.Ionization energies are always negative quantities.b.Oxygen ha

worty [1.4K]

Answer:

(a) FALSE

(b) FALSE

(d) FALSE

Explanation:

Ionization energy refers to the energy needed for removal of a valence electron present in valence shell of a gaseous atom.

(a) The value of ionization energy of an atom is always positive. This is because energy has to be always supplied or provided to a gaseous atom for the removal of the valence electron.

Therefore, the statement (A) is false

(b) The ionization energy of an atom increases across a period i.e. from left to right. This is because the effective nuclear charge that is experienced by the valence electron increases from left to right in the periodic table, as the atomic number increases.

So, more energy is required to remove the valence electron of fluorine as compared to oxygen.

Therefore, the ionization energy of fluorine is greater than oxygen.

Therefore, the statement (B) is false

(c) First ionization energy is energy needed for removal of first electron present in valence shell of a neutral atom. Whereas, second ionization energy is the energy needed for removal of second electron present in valence shell of a monovalent cation

The second ionization energy of an atom is always greater than the first ionization energy. This is because removing an electron from a positively charged species, requires more energy.

Therefore, the statement (C) is true

(d) The third ionization energy refers to the energy needed to remove the third electron from a divalent cation.

Therefore, the statement (D) is false

7 0

3 years ago

Based on your knowledge of intermolecular forces and trends, select the statement that is most accurately compares HF and HCl.

tangare [24]

Answer:

(A) The intermolecular attraction between HF molecules are stronger than between HCl molecules mainly to due hydrogen bonding.

Explanation:

Since Flourine is highly electronegative and as such, when it bonds with Hydrogen it forms a hydrogen bond. Whereas the HCL molecule is a polar molecule whose inter-molecular forces are dipole dipole interactions. Although a Hydrogen bond is a type of dipole dipole interaction it is stronger than the traditional dipole dipole forces and London dispersion forces. HF also has a shorter bond length which makes the bond and inter-molecular forces stronger as compared to HCL.

8 0

2 years ago

What happens to the approximately 300 million metric tons of excess oxygen produced each year by photosynthetic marine organisms

blondinia [14]

Answer:

Oxygen is not released into the atmosphere

-The marine sediments are formed into rocks by Earth's geologic processes

7 0

3 years ago

Which type of heat island is

icang [17]

Answer:

a fast moving heat island

Explanation:

cause there is a high amount of heating molecule produced.

3 0

2 years ago

Explain Why s-32 is a stable nuclidle

malfutka [58]

I think it is because it has an even number of valence electrons.

4 0

3 years ago

Read 2 more answers