Homework Answers
Electron filling order is:
1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s 4f 5d
a)
Number of electron in K = 19
Electronic configuration is 1s2 2s2 2p6 3s2 3p6 4s1
Answer: 1s2 2s2 2p6 3s2 3p6 4s1
b)
Number of electron in Se = 34
Electronic configuration is 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p4
Answer: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p4
c)
Number of electron in Si = 14
Electronic configuration is 1s2 2s2 2p6 3s2 3p2
Answer: 1s2 2s2 2p6 3s2 3p2
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please help
1. Try to figure out electron configuration for following atoms: a. K (19th element,...
Try to figure out electron configuration for following atoms: a. K (19th element, 19 electrons) b....
Try to figure out electron configuration for following atoms: a. K (19th element, 19 electrons) b. Se (34th element, 34 electrons) c. Si (14th element, 14 electrons)
1. Try to figure out electron configuration for following atoms: a. K (19th element, 19 electrons)...
1. Try to figure out electron configuration for following atoms: a. K (19th element, 19 electrons) b. Se (34th element, 34 electrons) c. Si (14th element, 14 electrons) For atoms with Principle Quantum number 4, what are the possible values for 1 (Secondary Quantum Number) and m (Magnetic Quantum Number)?
To which element does this electron configuration belong (Ne]3s?an31M electron pairing in the box for the...
To which element does this electron configuration belong (Ne]3s?an31M electron pairing in the box for the 3s atomic orbital show WM Consider 3d8 □□□□□ arrange all 8 electrons with up/down arrows What's wrong with this atomic orbital 2p? Present electron dot symbols for the following atoms or ions: 2- Se Si Si Rb
help 2. For each of the following atoms, give the formula of the ion that the...
help
2. For each of the following atoms, give the formula of the ion that the atom is most likely to form and identify that ion as a cation or an anion. a) bromine b) sulfur c) gallium d) rubidium 3. Write the abbreviated electron configuration for the following: a) gain of 2 electrons by selenium b) loss of 3 electrons by gallium 4. a) What is the formula of the compound formed between: (i) Al and Se ii) Ca...
1)Use the periodic table to identify the element with the following electron configuration. Spell out the...
1)Use the periodic table to identify the element with the following electron configuration. Spell out the full name of the element. a)[Ne]3s1 b)[Kr]5s24d10 c)[Xe]6s2 d)[Kr]5s24d105p3 2)Express your answer as a chemical formula. Use Lewis theory to determine for the compound that forms from: a) Al and S b)Na and S c)Sr and Se d)Ba and F 3)Determine the number of electron groups around the central atom for each of the following molecules. Express your answer as an integer. a)OF2 b)NF3...
10) How many valence electrons are there in an atom with an electron configuration of 1s...
10) How many valence electrons are there in an atom with an electron configuration of 1s 2s 2p 3s 3ps A) 2 B) 3 C) 5 D) 7 E) none of these 11) Consider the element with the electron configuration (Kr]5524d105p. This element is A) a halogen B) a transition metal C) an alkali metal D) an alkaline earth metal E) a noble gas 12) In which set of elements would all members be expected to have very similar chemical...
Which one of the following atoms has the ground state electron configuration of [Ar]45230104p5?! 1. Te...
Which one of the following atoms has the ground state electron configuration of [Ar]45230104p5?! 1. Te 2.1 3. Br 4.Se Which one of the following orbitals is degenerate with the 3py orbital in atoms with many electrons? 1.3dxy 2.15 3.35 4.3px
I need help with all these questions. Please and thank you 1. An element has the...
I need help with all these questions. Please and thank you
1. An element has the following electronic configuration: [Kr]4d5552 (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? (a) What element has this electronic configuration? 1s 2s 2p 3s2 (b) What...
1. How many electrons appear in the Lewis symbol for an element whose electron configuration is...
1. How many electrons appear in the Lewis symbol for an element whose electron configuration is 1s'2s'2p? a. 2 b. d. 2. In which of the following ionic compounds are ions with a +2 charge present? a LiSe c Mg,Si d. SnO 3. The Roman numeral ." in the name iron(m) oxide indicates that: a. iron is present in the form of +3 ions b. there are three iron atoms per formula unit c. there are three oxygen atoms per...
What group has the following electron configuration ving electron configuration, 1s? 2s 2p%324p w the electron dot...
What group has the following electron configuration ving electron configuration, 1s? 2s 2p%324p w the electron dot formula for each of the following elements: Ca² Br Ne Ga Cs Elements in group IA and VIIA of the pe form ions with charges of: group IA and VIIA of the periodic table would, respectively, be expected to Please complete the following table and provide the missing information Atomic Notation Mass Number Atomic Number Number of Number of Neutrons Electrons Number of...
Try to figure out electron configuration for following atoms: a. K (19th element, 19 electrons) b. Se (34th element, 34 electrons) c. Si (14th element, 14 electrons)
1. Try to figure out electron configuration for following atoms: a. K (19th element, 19 electrons) b. Se (34th element, 34 electrons) c. Si (14th element, 14 electrons) For atoms with Principle Quantum number 4, what are the possible values for 1 (Secondary Quantum Number) and m (Magnetic Quantum Number)?
To which element does this electron configuration belong (Ne]3s?an31M electron pairing in the box for the 3s atomic orbital show WM Consider 3d8 □□□□□ arrange all 8 electrons with up/down arrows What's wrong with this atomic orbital 2p? Present electron dot symbols for the following atoms or ions: 2- Se Si Si Rb
help
2. For each of the following atoms, give the formula of the ion that the atom is most likely to form and identify that ion as a cation or an anion. a) bromine b) sulfur c) gallium d) rubidium 3. Write the abbreviated electron configuration for the following: a) gain of 2 electrons by selenium b) loss of 3 electrons by gallium 4. a) What is the formula of the compound formed between: (i) Al and Se ii) Ca...
10) How many valence electrons are there in an atom with an electron configuration of 1s 2s 2p 3s 3ps A) 2 B) 3 C) 5 D) 7 E) none of these 11) Consider the element with the electron configuration (Kr]5524d105p. This element is A) a halogen B) a transition metal C) an alkali metal D) an alkaline earth metal E) a noble gas 12) In which set of elements would all members be expected to have very similar chemical...
Which one of the following atoms has the ground state electron configuration of [Ar]45230104p5?! 1. Te 2.1 3. Br 4.Se Which one of the following orbitals is degenerate with the 3py orbital in atoms with many electrons? 1.3dxy 2.15 3.35 4.3px
I need help with all these questions. Please and thank you
1. An element has the following electronic configuration: [Kr]4d5552 (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? (a) What element has this electronic configuration? 1s 2s 2p 3s2 (b) What...
1. How many electrons appear in the Lewis symbol for an element whose electron configuration is 1s'2s'2p? a. 2 b. d. 2. In which of the following ionic compounds are ions with a +2 charge present? a LiSe c Mg,Si d. SnO 3. The Roman numeral ." in the name iron(m) oxide indicates that: a. iron is present in the form of +3 ions b. there are three iron atoms per formula unit c. there are three oxygen atoms per...
What group has the following electron configuration ving electron configuration, 1s? 2s 2p%324p w the electron dot formula for each of the following elements: Ca² Br Ne Ga Cs Elements in group IA and VIIA of the pe form ions with charges of: group IA and VIIA of the periodic table would, respectively, be expected to Please complete the following table and provide the missing information Atomic Notation Mass Number Atomic Number Number of Number of Neutrons Electrons Number of...
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