Could you please give me answers for these ? thanks 1. Atomic radius decreases as we move from left to right in the periodic table. Which of the following is the BEST explanation for this trend?...
Could you please give me answers for these ? thanks
1. Atomic radius decreases as we move from left to right in the periodic table. Which of the following is the BEST explanation for this trend?
|
a. |
The electrons in the valence shell increase in number and thus interact more with one another as we move from left to right. |
|
|
b. |
There is more shielding of the inner electrons as we move from left to right. |
|
|
c. |
The electrons in the valence shell observe a greater effective nuclear charge as we move from left to right. |
|
|
d. |
There are more protons in the atom as we move from left to right. |
2. If n = 3 (is the highest occupied level ), how many orbitals contain an electron with ms = + 1/2 ?
|
a. |
28 |
|
|
b. |
14 |
|
|
c. |
10 |
|
|
d. |
7 |
3. The energy difference between level 1 and level 2 in a hydrogen atom is +984 kJ. Which of the following does this energy difference correspond to?
|
a. |
the energy absorbed by a mole of electrons moving from n = 1 to n = 2 in the atom |
|
|
b. |
the energy released by an electron moving from n = 2 to n = 1 in the atom |
|
|
c. |
the energy absorbed by an electron moving from n = 1 to n = 2 in the atom |
|
|
d. |
the energy released by a mole of electrons moving from n = 2 to n = 1 in the atom |
4. In a correct Lewis structure, how many lone pairs of electrons are assigned to the carbon atom in carbon monoxide?
|
a. |
1 |
|
|
b. |
3 |
|
|
c. |
0 |
|
|
d. |
2 |
Homework Answers
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Could you please give me answers for these ? thanks 1. Atomic radius decreases as we move from left to right in the periodic table. Which of the following is the BEST explanation for this trend?...
- Parta Explain why atomic radius decreases as you move to the right across a period...
- Parta Explain why atomic radius decreases as you move to the right across a period for main-group elements but not for transition elements Match the words in the left column to the appropriate blanks in the sentences on the right Reset Help proton larger As you move to the right across a row in the periodic table for the main-group elements, the effective nudear charge (Zl) experienced by the electrons in the outermost principal energy level resulting in a...
8. Select the true statement. a. Atomic radius increases going from left to right across a...
8. Select the true statement. a. Atomic radius increases going from left to right across a period. b. The p electrons in fluorine are more poorly shielded from the nuclear charge than the p electrons in carbon. c. Cations are larger than their corresponding neutral atoms. d. Anions are smaller than their corresponding neutral atoms. e. Ionic radius generally decreases down a group. 9. (ACS question) Which of these elements has the highest first ionization energy? a. Ne b. F...
Answer true or false. 1. Atoms that lose electrons to achieve a filled valence shell become...
Answer true or false. 1. Atoms that lose electrons to achieve a filled valence shell become cations and form ionic bonds with anions. 2. Ionic bonds tend to form between elements on the left side of the Periodic Table, and covalent bonds tend to form between elements on the right side of the Periodic Table. 3. Electronegativity is a measure of an atom's attraction for the electrons it shares in a chemical bond with another atom. 4. Fluorine, in the...
i need the answers to all 10 questions please principal quantum number, angular momentum quantum number,...
i need the answers to all 10 questions please
principal quantum number, angular momentum quantum number, magnetic (1) The shape of an electron orbit is determined by: quantum number, or electron spin quantum number. (2) For the sad shell, the number of possible orbits is: n =5 50 n=1 n2 n: 3 z 9 19 Questions 2. 6, 8, 9, 12, 18 (3) For the so shell, the maximum number of electrons is: 2, 6, 8, 9, 12, 118 [4]...
Please answer ALL of the following questions!!! Thanks!!! And please briefly explain how you got the...
Please answer ALL of the following questions!!!
Thanks!!! And please briefly explain how you got the answer to each
question.
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
11)
12)
13)
14)
15)
16)
17)
18)
The trend for electronegativity values decreases A. Down a group and left to right across a period B. Up a group and left to right across a period Down a group and right to left across a period D.Up a group and...
Please! Can anyone explain those answers to me? It would be better if you could demonstrate...
Please! Can anyone explain those answers to me? It would be
better if you could demonstrate your process. Thanks!
Review Constants Periodic Tab (Figure 1) is the potential energy diagram for a 30g particle that is released from rest at 10 m Part A Will the particle move to the right in the positive direction or to the left in the negative direction, and why? Figure 1 of 1 Energy (J) • The particle will move to the left. Moving...
can someone help me to answer those questions 8. Explain the trend as you move across...
can someone help me to answer those questions
8. Explain the trend as you move across a row of the periodic table for each of the following some properties using your understanding of effective nuclear charge. Atomic radius b. Ionization energy 6. Electronegativity STOP Model 2 - The Alkali Metals Pare Atomic Number Core Charge Atomic Radius 1st lonization Energy Electro- negativity Lithium 0.91 Sodium 152 pm 186 pm 227 pm 520 kJ/mole 496 kJ/mole 419 kJ/mole 0.87 0.73 Potassium...
From the information below, identify element X. a. The wavelength of the radio waves sent by...
From the information below, identify element X. a. The wavelength of the radio waves sent by an FM station broadcasting at 97.1 MHz is 30.0 million (3.00×107) times greater than the wavelength corresponding to the energy difference between a particular excited state of the hydrogen atom and the ground state. b. Let V represent the principal quantum number for the valence shell of element X. If an electron in the hydrogen atom falls from shell V to the inner shell...
Please help urgent( will rate):) hi so the right answer to these questions are the ones ive circled but i just dont und...
Please help urgent( will rate):)
hi so the right answer to these questions are the ones ive
circled
but i just dont understand why.
thanks
the
answer to 15 is D
28 6. He ions are prepared with the electron in the T=X state. The electrons relax to lower energy states, by one or more transitions, and produce an emission spectrum with light at 6 difference wavelengths. What is the value of X? A. 3 B. 4 С. 5 D....
Question 14 (4 points) Which of the following properties increase(s) as we move left to right...
Question 14 (4 points) Which of the following properties increase(s) as we move left to right across the periodic table? ionization energy O atomic size Metallic Character two of the above all of the above Question 13 (4 points) Which one of the following sets of quantum numbers (n, l, m,ms) is NOT correctly written? (3, 3, 1, -1/2) O (4,0, 0, +1/2) (3, 1,-1, +1/2) O (2, 1, 0, -1/2) (3, 2, 1, +1/2) Question 10 (4 points) Hydrogen...
- Parta Explain why atomic radius decreases as you move to the right across a period for main-group elements but not for transition elements Match the words in the left column to the appropriate blanks in the sentences on the right Reset Help proton larger As you move to the right across a row in the periodic table for the main-group elements, the effective nudear charge (Zl) experienced by the electrons in the outermost principal energy level resulting in a...
8. Select the true statement. a. Atomic radius increases going from left to right across a period. b. The p electrons in fluorine are more poorly shielded from the nuclear charge than the p electrons in carbon. c. Cations are larger than their corresponding neutral atoms. d. Anions are smaller than their corresponding neutral atoms. e. Ionic radius generally decreases down a group. 9. (ACS question) Which of these elements has the highest first ionization energy? a. Ne b. F...
i need the answers to all 10 questions please
principal quantum number, angular momentum quantum number, magnetic (1) The shape of an electron orbit is determined by: quantum number, or electron spin quantum number. (2) For the sad shell, the number of possible orbits is: n =5 50 n=1 n2 n: 3 z 9 19 Questions 2. 6, 8, 9, 12, 18 (3) For the so shell, the maximum number of electrons is: 2, 6, 8, 9, 12, 118 [4]...
Please answer ALL of the following questions!!!
Thanks!!! And please briefly explain how you got the answer to each
question.
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
11)
12)
13)
14)
15)
16)
17)
18)
The trend for electronegativity values decreases A. Down a group and left to right across a period B. Up a group and left to right across a period Down a group and right to left across a period D.Up a group and...
Please! Can anyone explain those answers to me? It would be
better if you could demonstrate your process. Thanks!
Review Constants Periodic Tab (Figure 1) is the potential energy diagram for a 30g particle that is released from rest at 10 m Part A Will the particle move to the right in the positive direction or to the left in the negative direction, and why? Figure 1 of 1 Energy (J) • The particle will move to the left. Moving...
can someone help me to answer those questions
8. Explain the trend as you move across a row of the periodic table for each of the following some properties using your understanding of effective nuclear charge. Atomic radius b. Ionization energy 6. Electronegativity STOP Model 2 - The Alkali Metals Pare Atomic Number Core Charge Atomic Radius 1st lonization Energy Electro- negativity Lithium 0.91 Sodium 152 pm 186 pm 227 pm 520 kJ/mole 496 kJ/mole 419 kJ/mole 0.87 0.73 Potassium...
Please help urgent( will rate):)
hi so the right answer to these questions are the ones ive
circled
but i just dont understand why.
thanks
the
answer to 15 is D
28 6. He ions are prepared with the electron in the T=X state. The electrons relax to lower energy states, by one or more transitions, and produce an emission spectrum with light at 6 difference wavelengths. What is the value of X? A. 3 B. 4 С. 5 D....
Question 14 (4 points) Which of the following properties increase(s) as we move left to right across the periodic table? ionization energy O atomic size Metallic Character two of the above all of the above Question 13 (4 points) Which one of the following sets of quantum numbers (n, l, m,ms) is NOT correctly written? (3, 3, 1, -1/2) O (4,0, 0, +1/2) (3, 1,-1, +1/2) O (2, 1, 0, -1/2) (3, 2, 1, +1/2) Question 10 (4 points) Hydrogen...
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