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USPshnik [31]
2 years ago
7

Assertion (A): Naphthalene balls disappear with time without leaving any solid.

Chemistry
2 answers:
gogolik [260]2 years ago
7 0

Explanation:

a) Both A and R are true and R is the correct

explanation of A.

Kruka [31]2 years ago
7 0

Answer:

\fbox {c) A is true but R is false.}

Explanation:

Assertion (A):

⇒ Naphthalene balls disappear with time without leaving any solid.

⇒ True √

Reason (R):

⇒ Solid converted to liquid is called sublimation.

⇒ False ×

⇒ Solid converted to liquid is called <u>melting</u>

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A neutral atom in the ground state of Sulfur has its outer most valence electron in which orbital? f d
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<u>Answer:</u> The outermost valence electron enters the p orbital.

<u>Explanation:</u>

Valence electrons are defined as the electrons which are present in outer most orbital of an atom.

Sulfur is the 16th element of the periodic table having 16 electrons.

Electronic configuration of sulfur atom is 1s^22s^22p^63s^23p^4

The number of valence electrons are 2 + 4 = 6

These 6 electrons enter s-orbital and p-orbital but the outermost valence electron will enter the p-orbital.

Hence, the outermost valence electron enters p orbital.

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3 years ago
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I think the correct answers from the choices listed above are the first, third and the last option. Ionic compounds are compounds that dissociates into ions when in aqueous solution. From the list, NH4Cl, KF and MgO are the ionic compounds. Hope this answers the question.
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