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netineya [11]
3 years ago
12

which best describes ionization energy? a. energy needed to add an electron to a neutral atom in the gas phase b. energy needed

to add an electron to a neutral atom in the liquid phase c. energy needed to remove an electron from an atom or ion in the gas phase d. energy needed to remove an electron from an atom or ion in the liquid phase
Chemistry
2 answers:
SVEN [57.7K]3 years ago
8 0
<span>c. energy needed to remove an electron from an atom or ion in the gas phase</span>
Arte-miy333 [17]3 years ago
5 0

C energy needed to remove an electron from an atom or ion in the gas phase

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The electron configurations of five different elements are shown below. which of these elements is expected to have the largest
ipn [44]
Missing question:

(a) 1s2 2s2 2p6 3s1
(b) 1s2 2s2 2p6 3s2
(c) 1s2 2s2 2p6 3s2 3p1

(d) 1s2 2s2 2p6 3s2 3p4

(e) 1s2 2s2 2p6 3s2 3p5

Answer is: a) 1s²2s²2p⁶3s¹ (sodium).

Sodium have the largest second ionization energy, because when he lost one electron(first ionization energy), he have stable electron configuration of noble gas neon (1s²2s²2p⁶), so sodium do not need to lost second electron, because he will have unstable electron configuration.

7 0
3 years ago
An aqueous CsCl solution is 8.00 wt% CsCl and has a density of 1.0643 g/mL at 20°C. What is the boiling point of this solution?
umka2103 [35]

<u>Answer:</u> The boiling point of solution is 100.53

<u>Explanation:</u>

We are given:

8.00 wt % of CsCl

This means that 8.00 grams of CsCl is present in 100 grams of solution

Mass of solvent = (100 - 8) g = 92 grams

The equation used to calculate elevation in boiling point follows:

\Delta T_b=\text{Boiling point of solution}-\text{Boiling point of pure solution}

To calculate the elevation in boiling point, we use the equation:

\Delta T_b=iK_bm

Or,

\text{Boiling point of solution}-\text{Boiling point of pure solution}=i\times K_b\times \frac{m_{solute}\times 1000}{M_{solute}\times W_{solvent}\text{ (in grams)}}

where,

Boiling point of pure solution = 100°C

i = Vant hoff factor = 2 (For CsCl)

K_b = molal boiling point elevation constant = 0.51°C/m

m_{solute} = Given mass of solute (CsCl) = 8.00 g

M_{solute} = Molar mass of solute (CsCl) = 168.4  g/mol

W_{solvent} = Mass of solvent (water) = 92 g

Putting values in above equation, we get:

\text{Boiling point of solution}-100=2\times 0.51^oC/m\times \frac{8.00\times 1000}{168.4g/mol\times 92}\\\\\text{Boiling point of solution}=100.53^oC

Hence, the boiling point of solution is 100.53

6 0
3 years ago
Is ammonia a homogeneous mixture?
ki77a [65]
Yes! since its clear, <span>due to formation of ammonium hydroxide in water.</span>
5 0
3 years ago
Does it require more energy to melt an ionic compound or dissolve it in water? It requires much more energy to melt it. It takes
Dmitrij [34]
Melting, due to the strong forces provided by lattice energy framework, would require more energy
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Most atoms normally have a net charge that is _________.
Citrus2011 [14]
Zero because there are so many electrons as protons.
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