What are the colors of bromine and potassium permanganate?

Q: magnesium aluminum sulfur silicon

A: To solve this question,  it is very important to write electronic configuration of all the species…

Q: Which following element has the condensed electron configuration [Kr] 4d¹⁰ ? a. Germanium (Ge) b.…

A: Electron configuration is the listing of atomic orbitals and the arrangement of electrons in each…

Q: what are the number of unpaired electrons present in Cr^2+,  Fe^3+,  Co^2+ ?

A: The electron configuration of Cr is 1s2 2s2 2p6 3s2 3p6 4s1 3d5.  Removal of two electrons results…

Q: Draw and explain the photoelectron spectrum of CO.

A:

Q: 2) What is one of the major hazards associated with potassium dichromate?

A: Potassium dichromate molecular formula is K2Cr2O7.

Q: Describe the periodic trends in radii?

A: Atomic radii increases as we move down the group because effective nuclear charge decreases. So…

Q: Write the ground state electron configurations for the Zn2+, Cu2+, Co2+, Fe3+, and Cr3+ ions. You…

A:

Q: Why are metals commonly white but copper and gold are colored?

A: Answer - According to the question - Metal are white because  in  smooth surface these metal will be…

Q: Which ions have ten d electrons in the outermost d sub shell?

A: Electron configuration of atom or ion is written by following Aufbau's principle which states that…

Q: does transition elements have colored ions? if yes, why?

A: Transition elements form coloured compounds due to incomplete d-orbitals.

Q: Which has the greater third ionization energy, Ca or S? Explain.

A: Removal of electrons from the valence orbitals of an atom requires energy. This is called the…

Q: Which elements are in the fırst transition series? Sc through Cu Y through Ag O Hf through Au Rf…

A: The first transition series starts  with  scandium (symbol Sc, atomic number 21) and ends with zinc…

Q: Why are bromine atoms more reactive than bromide ions?

A: We know ions are formed either by loss or gain  of electron to reach a noble gas configuration or…

Q: Calculate the number of unpaired electrons in [Fe(NH3)6]3*.

A: Solution-Fe(NH3)63+-Fe3+ =3d5= valency electronsan NH3 is strong field ligand pairing accured.   3d5…

Q: What is the maximum number of electrons ollc? (a) 3s (b) 2

A: group of orbitals is known as a subshell. total 4 numbers of subshells are present ,they are s , p,…

Q: Calculate photon wavelength for selenium Se=195 Electron affinity(KJ/mol) _____nm

A: Given electron affinity of selenium = 195 kJ/mol

Q: Which of the following is the ground state electron configuration of Ni ?

A: Ni 's atomic number is 28 Ground state electronic configuration is           1s2 2s2 2p6 3s2 3p6 4s2…

Q: A zinc atom contains a total of 18 electrons in its 3s, 3p, and 3d orbitals. Why does its…

A: Given information: Zinc atom contains a total of 18 electrons in its 3s, 3p, and 3d orbitals.

Q: Which has seven valence electrons? A. sodiumB. chromiumC. boronD. argonE. chlorine

A: The given options are,

Q: What is your favorite color of fireworks? Which element is responsible for this color and which…

A: The colour red in the fireworks comes from the use of Strontium salts hence the element Strontium…

Q: How many unshared electrons are found for the ground electronic state of germanium (element number…

A: Answer Ushered electrons in Ge Electronic configuration of Ge   [Ar]…

Q: Write the electron configuration for the Br atom and the predicted Br ion.

A: ◆ Electronic Configuration is the distribution of electrons in the energy levels of the atom. The…

Q: Write the electron configuration for Si7+ ion.

A: The arrangement of electrons in orbital shells and sub shells is the electronic configuration of an…

Q: Which of the following has two unpaired electrons? (a) Mg (b) Si (c) S (d) Both Mg and S (e)…

A:

Q: 2. Electron configurations a. Write the electron configuration and orbital diagram for Co. Identify…

A:

Q: What are the colors of CoC12 and CoC12 6H2O and specify the source used?

A: Cocl2 is. A fascinating compound which change colour in response to humidity. As humidity increase…

Q: Which element possesses the least number off unpaired electrons? A. Co В. Cr С. C. Cu D. Mn

A:

Q: Which one of the following elements has a +2 ion with 2 unpaired electrons?  Be Ge Co Ni Fe

A: The solution is as follows:

Q: how can you use the periodic table or electron configuration to find out if an element is…

A: All matter can be classified as solid, liquid and gases mainly. In these physical states of matter,…

Q: Of the following, which element has the highest first ionization energy? In Sb Rb

A: It is the energy required to remove a valence electron from its outermost shell in its gaseous…

Q: Which gaseous ion in its ground state has the greatest number of unpaired electrons?  a)  Mn+3 b)…

A: We have to find Ground state electronic configuration of the ions. a) Mn has 25 electrons. In Mn3+ ,…

Q: Usually, good fireworks display beautiful colors. Corresponding to the colors for chemicals used in…

A: a) Fireworks display beautiful colours because of presence of different metals ions (in form of…

Q: -Write the electron configuration for each of the following: a. lithium Li-13225 b. sodium…

A: 5) The elements given are lithium, sodium and potassium.

Q: a) How many core electrons does the Ni atom have? b) How many valence electrons are in the Ni3+…

A: The electronic configuration is used to represent the distribution of electron density in an…

Q: Which of the elements below exhibit the "inert-pair effect"? · A sulphur B lead C sodium D magnesium

A: Some p-block elements, such as thullium(Tl),polonium(Po), tin ( Sn ), lead (Pb), bismuth ( Bi ) etc…

Q: How many unpaired electrons does the atom Fe have? 1 4 3 O 2

A: Electronic configuration: Electronic configuration of an element is the arrangement of its electrons…

Q: After drawing the box orbital diagram for phosphorus, how many unpaired electrons are in the 3p…

A: Phosphorus exam 15 group element. Nitrogen family also called as pickogen. the electronic…

Q: Why do Cr and Cu not have the expected electron configurations?

A: electronic configuration of Cr-Chromium   electronic configuration of Cu-Copper

Q: 1. List two metals that have a greater tendency to lose electrons than Manganese (Mn).

A: Metals are the elements that can easily lose electrons to form positive ions because they have a…

Q: A beaker contains a solution that absorbs wavelength at 400 nm and 570 nm. Explain what is the…

A: complementary colors are diametrically opposite each other. Thus, absorption of 400 nm light renders…

Q: Which of the following has two unpaired electrons? A) Mg and Si B) Si and S (C) Si (D) Mg

A: Which one of the following has two unpaired electrons that can be find from their electronic…

Q: Which of these atoms is the most active?

A:

Q: What are the colors of each glass contains?

A: The glass containers given are,

Q: Which of the following is the electron configuration of a neutral Fe atom?

A: Explanation to the correct answer is given below

Q: Why does table salt, NaCl, some times appear yellow in colour?

A: All matter can exist in different physical states; solid, liquid and gases. Solid is well known…

Q: the electron configuration of iron (iii) ion is: ?

A: The ion given is Iron (III) i.e Fe3+.

Q: Which of the following atoms has the least metallic character? S, Li Na OK Cs Rb

A: Any element which easily donates it electron is said to have strong mettalic character.