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3 years ago

Can two organisms belong to the same family but different classes? Explain.

1 answer:

7 0

This information is correct. This is because the order of classification is domain, kingdom, phylum, class, order, family, genus, species. Since class comes before family, the two organisms could be in the same class, but then when you specify further, they could be in different families.

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Which of the following is true for the theoretical yield of a reaction? (1 point)

just olya [345]

Answer:

It is always twice the value of the actual yield.

Explanation:

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2 years ago

What happens to a magnetic field if the current carrying wire A has three times as many loops but the same current as the curren

PilotLPTM [1.2K]

More the number of turns, more will be the magnetic field produced.

Hence wire A will have magnetic field greater than wire B.

Hope this helps!

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3 years ago

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Explain why fluorine and chlorine are in the same group of the periodic table.

Ivenika [448]

Answer:

They both have 7 electrons in their outer shell

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3 years ago

To what extent do covalent compounds conduct electricity?

sertanlavr [38]

The answer is never because there's no electricity

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3 years ago

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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

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3 years ago