If an unknown element X has an atomic number of eight, the complete electronic configuration of...
If an unknown element X has an atomic number of eight, the complete electronic configuration of its ion X2- will be what?
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If an unknown element X has an atomic number of eight, the
complete electronic configuration of...
An unknown element (Element X) has three naturally occurring isotopes. Complete the table by filling in...
An unknown element (Element X) has three naturally occurring isotopes. Complete the table by filling in the missing percent abundance (2 decimal places). Then calculate the atomic mass of element X (1 decimal place) and determine its identity by filling in its atomic symbol (case sensitive). Isotope Abundance (%) Atomic Mass (amu) 23.985042 1 78.99 2 24.985837 10.00 3 25.982593 amu Atomic mass of element X (1 decimal place): Atomic symbol of element X:
A polyatomic ion is composed of C, N, and unknown element X. The ion X2- has...
A polyatomic ion is composed of C, N, and unknown element X. The ion X2- has an electron configuration of [Ar]4s23d104p6. a) What is X? (3 pts) b) Once you determine what X is, give the best Lewis structure for [XCN]-. (3 pts)
A7. An atom has the outermost electronic configuration as 4s 3d5. (a) What is the atomic...
A7. An atom has the outermost electronic configuration as 4s 3d5. (a) What is the atomic number and the mass number of the atom?(1 mark) (b) Write the electronic configuration of this atom having a +2 charge. (2 marks) (c) Determine the total number of р electrons in the atom and also the number of electrons in the N energy level. (1 mark) (d) Write the electronic configuration of the elements who shows exceptional electronic configuration. (3 marks)
What is atomic number of an unknown element whose atomic mass and formal charge are (40g/mol)...
What is atomic number of an unknown element whose atomic mass and formal charge are (40g/mol) and (-3) respectively? (The unknown element atom has 24 electrons.) Then how many neutrons does the element atom have?
identify the group name, element name, element symbol, atomic number, atomic weight and electron configuration for...
identify the group name, element name, element symbol, atomic number, atomic weight and electron configuration for each element Elements 0- Br Focus English (United States) 23
An element has the following electronic configuration: [Kr]4d15s2 (a) What period does it belong to? (b)...
An element has the following electronic configuration:
[Kr]4d15s2
(a) What period does it belong to?
(b) What is its group number? (Use group numbers from 1 to
18)
(c) What kind of element is it? (Main group metal, transition
metal, metalloid, nonmetal?)
(d) How many unpaired electrons are there in an atom of this
element?
(e) What element has this electronic configuration? (attached
figure)
Thank you!!! :)
4p AS 3d
. An element has the following electronic configuration: [Ar]3d1 4s (a) What period does it belong...
. An element has the following electronic configuration: [Ar]3d1 4s (a) What period does it belong to? (b) What is its group number? (Use group numbers from 1 to 18) (c) What kind of element is it? (Main group metal, transition metal, metalloid, nonmetal?) d) How many unpaired electrons are there in an atom of this element? 2. (a) What element has this electronic configuration? 1s 2s 2p'3s3p (b) What element has this electronic configuration? 3d 4s 4p 3. (a)...
atomic structure question a) draw the energy-level diagram and write the electronic configuration for zirconium (eleme...
atomic structure question a) draw the energy-level diagram and write the electronic configuration for zirconium (element 40). b) use the diagram to explain why the Zr4+ ion exists. c) compare the stability of the Zr atom and the Zr ion. account for any differences in their stability.
12. Suppose that a stable element with atomic number 120, symbol Z, has been discovered. a....
12. Suppose that a stable element with atomic number 120, symbol Z, has been discovered. a. Write the ground-state electron configuration for 2, showing only the valence-shell electrons. b. Would Z be a metal or a nonmetal? Explain in terms of electron configuration. c. On the basis of periodic trends, would Z have the largest atomic radius in its group or would it have the smallest? Explain in terms of electronic structure. d. What would be the most likely charge...
What element forms an ion with an electronic configuration of 1s22s22pº (or [Ne]) and a –2...
What element forms an ion with an electronic configuration of 1s22s22pº (or [Ne]) and a –2 charge? Give the symbol for the element. element symbol:
An unknown element (Element X) has three naturally occurring isotopes. Complete the table by filling in the missing percent abundance (2 decimal places). Then calculate the atomic mass of element X (1 decimal place) and determine its identity by filling in its atomic symbol (case sensitive). Isotope Abundance (%) Atomic Mass (amu) 23.985042 1 78.99 2 24.985837 10.00 3 25.982593 amu Atomic mass of element X (1 decimal place): Atomic symbol of element X:
A7. An atom has the outermost electronic configuration as 4s 3d5. (a) What is the atomic number and the mass number of the atom?(1 mark) (b) Write the electronic configuration of this atom having a +2 charge. (2 marks) (c) Determine the total number of р electrons in the atom and also the number of electrons in the N energy level. (1 mark) (d) Write the electronic configuration of the elements who shows exceptional electronic configuration. (3 marks)
identify the group name, element name, element symbol, atomic number, atomic weight and electron configuration for each element Elements 0- Br Focus English (United States) 23
An element has the following electronic configuration:
[Kr]4d15s2
(a) What period does it belong to?
(b) What is its group number? (Use group numbers from 1 to
18)
(c) What kind of element is it? (Main group metal, transition
metal, metalloid, nonmetal?)
(d) How many unpaired electrons are there in an atom of this
element?
(e) What element has this electronic configuration? (attached
figure)
Thank you!!! :)
4p AS 3d
. An element has the following electronic configuration: [Ar]3d1 4s (a) What period does it belong to? (b) What is its group number? (Use group numbers from 1 to 18) (c) What kind of element is it? (Main group metal, transition metal, metalloid, nonmetal?) d) How many unpaired electrons are there in an atom of this element? 2. (a) What element has this electronic configuration? 1s 2s 2p'3s3p (b) What element has this electronic configuration? 3d 4s 4p 3. (a)...
12. Suppose that a stable element with atomic number 120, symbol Z, has been discovered. a. Write the ground-state electron configuration for 2, showing only the valence-shell electrons. b. Would Z be a metal or a nonmetal? Explain in terms of electron configuration. c. On the basis of periodic trends, would Z have the largest atomic radius in its group or would it have the smallest? Explain in terms of electronic structure. d. What would be the most likely charge...
What element forms an ion with an electronic configuration of 1s22s22pº (or [Ne]) and a –2 charge? Give the symbol for the element. element symbol:
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