A neutral magnesium atom has 12 electrons. How many electrons does Mg²⁺ have?

Q: Re-order each list in the table below, if necessary, so that the atoms or ions in it are listed in…

A: When we go from top to bottom in a group size increases due to increase in number of shell. When we…

Q: How many valence electrons does tellurium (Te) have?(a) 5 (b) 6 (c) 16 (d) 52

A: The number of electrons in an element is equal to its atomic number. The number of electron which…

Q: In the n = 4 principal level, what is the maximum number of electrons that could have m = -1? %3D

A: 2 electrons

Q: How many valence electrons does each of the following atoms have? a. titanium, Z = 22 b. iodine, Z =…

A: The number of electrons present in the outermost shell of an atom is known as valence electrons. The…

Q: Which of the following atoms contains only three valence electrons:Li,B,N,F,Ne?

A: The number of electrons present in the outermost shell of the atom is known as valence electrons.…

Q: 13. Which ion is this atom most likely to form? 1 111 1 1s 2s 2p 3s а. Na* b. Na c. Ne d. Mg"

A: Given electron configuration is,  1s2 2s2 2p6 3s1

Q: How many valence electrons does a tin (Sn) atom have? Select one: а. 1 b. 3 С. 4 d. 5 е. 2

A:

Q: Effective nuclear charge of: 3p electrons in chromium 3s electrons in cobalt 2s electrons in…

A: Zeff can be calculated by slaters Rule in any element .          Formula for Zeff   = atomic Number…

Q: How much energy is evolved when 2.65 mg of Cl(g) atoms adds electrons to give Cl- (g) ions?

A:

Q: How many valence electrons are in each element?  A. Ba  B. Al  C. Xe

A: To find the valence electrons of some the given elements. A) Ba B) Al C) Xe

Q: How many 4d electrons are in I?

A: Iodine is a member of group 17, called the halogen group and the electronic configuration of iodine…

Q: How many electrons does the ion Fe +3 ( A=56, Z= 26) have?  (a) 23  (b) 26  (c) 29  (d) 56

A: Interpretation: The number of electrons in the Fe+3 is to be determined. A = 56 Z = 26

Q: 6. What are the no of protons and electrons on the following ions: (a) Ca , (b) F , (c) 0? , and (d)…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: re in the n = 3 shell? m number of electrons in the n = 3 shell?"

A: Circular path around the nucleus where electrons revolve ,called shell. Subshells in n = 3 are 3s…

Q: Re-order each list in the table below, if necessary, so that the atoms or ions in it are listed in…

A: The trend in atomic size in a periodic table is as follow- The atomic size in same group going from…

Q: How many 4d electrons are there in Pd2+? What +2 ion in the fourth period has the same number of 3d…

A: There are 118 chemical elements in a periodic table. The periodic table is divided into 18 groups…

Q: How many valence-shell electrons are there in NO?

A: Valence shell electrons are those that are present in the outermost shell.

Q: Elements in group 17 have how many valence electrons?

A: Group 17 belongs to Halogens . Halogens has seven valence electrons on their outer most electronic…

Q: Write the electron configuration for Al3+. Also, identify which of these electrons are valence…

A: Atomic no.of aluminium is 13 and it is a p-block element. Having electronic configuration: 1s2 2s2…

Q: How many valence electrons are there in an atom of As (Z = 33

A: Given, Arsenic , As having atomic number 33 We can determine the number of valence electrons of the…

Q: How many electrons can have n = 50, l = 2.

A: Given that , Principal quantum number= n= 50 Azemuthial quantum number= l= 2

Q: How many valence electrons are in atom with the following electron configuration? [Ar] 4s? 3d3 A) 1…

A: Given electron configuration: [Ar] 4s2 3d3 We have to calculate the number of valence electrons…

Q: A neutral atom has the following electron configuration: 1s 25 2p°3s*3p² 6. What is the chemical…

A: Given configuration is :  1s22s22p63s23p2  The configuration belongs to neutral atom and for neutral…

Q: How many electrons in chlorine have { = 0? Chlorine is in its ground state. 1 O 2 O 4

A: Chlorine has an atomic number of 17.

Q: What is the maximum number of electrons that can be accommodated in the N-Shell?

A: The closest shell to the atomic nucleus is known as "1 shell" or ''K-shell''. The second shell…

Q: 1s22s22p63s23p6 Which neutral element has this electron configuration?

A: Argon

Q: Write the following full and noble gas electron configurations:   As Cr Br Sr

A:

Q: 4. How much energy is evolved when 2,65 mg of Cl(g) atoms accept electrons to form Cl–1 (g) ions?

A:

Q: 1) what does the inner electrons do that affect the outermost  electrons? 2) which  atoms  readily…

A: 1) The proton is situated inside the nucleus and the electrons are evolving around the nucleus in…

Q: 1. Silicon has the electronic configuration 1s2 2s2 2p6 3s2 3p2.  Discuss how you can determine that…

A: Since you have asked multiple questions, we will solve the first three questions for you. If you…

Q: Re-order each list in the table below, if necessary, so that the atoms or ions in it are listed in…

A: atomic size is always greater then  its ionic size .

Q: Write the electron configurations of the following ions: 1. Ag+1 (shorthand) 2. Br1 (shorthand) 3.…

A: The question is based on the concept of atomic structure. We have  to write electronic configuration…

Q: Symbol # of # of Electronic Atom/Anion/ Protons Electrons Configuration Cation C K* Na*

A: Atomic number = number of protons = number of electrons

Q: How many valence electrons do atoms of each of the elements have? Cs: valence electrons Kr: valence…

A:

Q: How many valence electrons do atoms of each of the elements have? Sr: valence electrons Xe: valence…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Solve the attached

A: The electronic configuration for Kr = 1s22s22p63s23p63d104s24p6 and its atomic number is 36. -2…

Q: number

A:

Q: Re-order each list in the table below, if necessary, so that the atoms or ions in it are listed in…

A:

Q: What is the electron configuration (1s, etc.) for sodium (Na)? Identify the valence electrons by…

A: Na is present in 3rd period and group 1 in the periodic table.  Group1 elements are known as alkali…

Q: How many electrons does this atom have: 1s^2 2s^2 2p^3.

A: In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons…

Q: A. Which list includes species with the same number of electrons? c. K', CI, s² d. Fe 2, Co?, Ni ?…

A: Isoelectronic species: For positive charge we have to remove an electron and for negative charge we…

Q: 2) Write the full orbital diagram for a carbon atom

A: The C atom atomic number is 6. Its electronic configuration is 1s2 2s22p2. The orbital diagram is…

Q: How many valence electrons are there in P3-?

A: We know phosphorus electronic configuration is 1s22s22p63s23p3 total electrons in P = 15

Q: How many valence electrons are there for the following atoms: (a) B fill in blank (b) Se fill in…

A: (a) B Atomic number = 5 Electronic configuration=1s22s2 2p1 The number of electrons in outermost…

Q: What might be the electron configuration of K+, an atom that has lost an electron?

A: Since you have posted multiple unrelated questions, we are entitled to answer the first only.

Q: What is the maximum number of electrons that can have n=4 and l=2 in an atom?

A:

Q: Write out the full electron configuration for a magnesium ion with a charge of 1 +

A: Answer :-   The electron configuration of Magnesium ion with a charge +1 is 1s2,2s2,2p6,3s1

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.