3 years ago

What causes these H-bonds to form?

1 answer:

4 0

Answer: It is caused by the tendency of some atoms in molecules to attract electrons more than their accompanying atom.

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Calcum chloride contains only calcum and chloride What is the fomula for this compound? fou need the Peodie Table for thia quest

mafiozo [28]

Answer:

$CaCl_2$

Explanation:

Calcium is the element of the group 2 and period 4 which means that the valence electronic configuration is $[Ar]4s^2$ .

Chlorine is the element of the group 17 and period 3 which means that the valence electronic configuration is $[Ne]3s^23p^5$ .

Thus, calcium losses 2 electrons to 2 atoms of chlorine and these 2 atoms of chlorine accepts each electron to form ionic bond. This is done in order that the octet of the atoms are complete and they become stable.

Ca Cl

2 1

Cross multiplying the valency, We get, $CaCl_2$

Thus, the formula of calcium chloride is $CaCl_2$ .

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4 years ago

How many valence electrons are in the outermost energy level of each of the following elements? A. Helium B. Lithium C. Nitrogen

aleksklad [387]

<span>A. Helium </span>atomic number 2
hope it helps

8 0

3 years ago

10. What is the IUPAC name of this compound? CH3 -CH2-C =C-CH3

MrMuchimi

Answer:

2-pentene or pent-2-ene

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2 years ago

Choose the value for rotation to place triangle ABC on top of triangle DEF. How can you complete the transformation in only one

MariettaO [177]

Answer:90°

Explanation:

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2 years ago

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The standard cell potential (E°cell) for the reaction below is +0.63 V. The cell potential for this reaction is ________ V when

Natasha_Volkova [10]

Answer: 0.52V

Explanation:

Ecell = Ecell(standard) - [(0.0592 logQ)/n]

Q = product of the quotient

n = no of electrons transferred = 2

Ecell = 0.63 - [(0.0592*Log(1 / 2.0 * 10-4) / 2]

Ecell = 0.63 - 0.0194

Ecell = 0.5205V

5 0

3 years ago