(a) Why is calcium generally more reactive than magnesium?(b) Why is calcium generally less reactive than potassium?

Q: ionization energy

A: Ionization energy is defined as the amount of energy required in order to remove most loosely bound…

Q: Which of these are paramagnetic in their ground state?(a) Ga(b) Si(c) Be(d) Te

A: Interpretation: The elements that are paramagnetic in their ground state are to be determined.…

Q: What is the basis in assigning a central atom?

A: The basis on which central atom is assigned has to be given.

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

A: Potassium dichromate molecular formula is K2Cr2O7.

Q: Which is an acidic oxide? Group of answer choices Fe2O3 MgO Cr2O3 P4O10 K2O

A: The nature of species formed on the dissolution of oxides in water determines whether that oxide has…

Q: a The relative ages of the rocKS b The composition of the rock

A: Dear student I have given answer to your question in the image format.

Q: How can you explain the reactivities of halogens?

A: Interpretation - The reactivities of halogens are to be explained.

Q: In contrast to sodium, why would calcium, with two electrons in the outer shell, react with two…

A: A bond is an attractive force between any two entities. It can be covalent, ionic, coordinate, etc.…

Q: What family of elements are the most active metals ?

A: What family of elements are the most active metals has to be given.

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: What is the Nobel gas electron configuration by filing order and spdf of 3 elements used to give…

A: Answer -  Nobel gas  - The noble gases make up a class of chemical elements with similar properties;…

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

A: Ionization energy is the energy required for the removal of electron from the outermost shell of an…

Q: why iodine is dark violet in colour?

A: Visible region: The electromagnetic radiation in range of is regarded as visible region which is…

Q: List the the main-group elements?

A: The periodic table is defined as the representation of the elements classified into 18 groups and 7…

Q: Define the term transition elements?

A: ● Transition elements (also known as transition metals) are elements that have partially filled d…

Q: 1. Assuming that the light energy to 49.4KJ, what would be the maximum wavelength of light with…

A:

Q: Is strontium a type1 or type2 metal?

A: Firstly understand what is TYPE-1 and TYPE-2 metals:- •TYPE-1 METALS:-Metals whose ions(cations) can…

Q: why doea a transition series contain 10 elements?

A:

Q: how can you diffrentiate between lanthanides and actinides ?

A: The long form of the periodic table is a tabular arrangement of all known elements. Here the…

Q: Place the following in order of increasing atomic radius. As Br As < Br < O O < As < Br Br < As < O…

A: The order of increasing atomic radius of As, O , Br = ?

Q: An atom with a stronger electron affinity is often more reactive. Given a pressurized chamber…

A: The question is based on the concept of periodic properties of elements. we need to identify which…

Q: How can iodine (Z=53) have a higher atomic number yet alower atomic mass than tellurium (Z=52)?

A: lodine (Z=53) has a higher atomic number than tellurium (Z=52). But the atomic mass of iodine is…

Q: What is the electron configuration of -3 C

A: The number electron in negatively charged species is equal to atomic number plus number of negative…

Q: Determine whether each element is a transition element.  Cr

A: Given Determine whether Cr element is a transition element.

Q: which of the d-block elements are not regarded as transition elements?

A: A transition metal is one which has incomplete outer d-orbitals when it forms one or more stable…

Q: The ground-state electron configuration of, O Fe is [Ar]4s 13d 5. V Cr O K O Mn

A:

Q: What are inner transition elements and main transition elements?

A:

Q: Why is agron the smallest than the other elements in period 3?

A:

Q: What causes the changes in ionisation energy across period 2  elements?

A: Ionisation energy is the energy required to remove an electron from the outermost shell of an atom.…

Q: As we move across a period of the periodic table, why dothe sizes of the transition elements change…

A: The reason is as given below;

Q: Write a balanced equation for the reaction that occurs ineach of the following cases: (a) Cesium is…

A: Balanced equation is that when atoms on both reactants and products side are equal. A chemical…

Q: Look at equation 11: If Br,(g) + 2KCI (aq) reacted instead of CI, (g) + 2KBr (aq) could this…

A: Cl2  + 2e- → 2 Cl-     E° = 1.36 VBr2  + 2e- → 2 Br-     E° = 1.09 VBr2 (g) + 2 KCl(aq) → 2Br-  +…

Q: Explain why the first innization energy of Ca is greater than that of K, whereas the second…

A: The first ionization energy of Ca is greater than that of K, whereas the second ionization energy of…

Q: Explain the following observations: (i) Transition elements generally form coloured compounds. (ii)…

A: Elements which have partially or incompletely filled d-orbitals in their ground or stable oxidation…

Q: What are the transition elements? Write two characteristics of the transition elements.

A: Transition elements are those that are having incompletely filled d-orbitals. These elements are…

Q: Why Lanthanides and Actinides are separated from the other elements? Please explain briefly.

A: Lanthanides and Actinides are separated from the other elements that have to be explained below.

Q: Which of the following gases contain a halogen? O HS O NO, O He O Co O HCN O HF O CI, O N,O Ar o, Ne…

A: According to the periodic table, halogens are members of group 17 .  Elements of halogen groups are…

Q: Which element is more reactive: Lithium or Boron?

A: Reactivity of the elements depends on factor like presence of electrons in outmost shell. Elements…

Q: Group 7A. What properties of hydrogen justify each of these placements?

A: Introduction :  Hydrogen is the first element in the periodic table, it is the smallest element…

Q: Determine whether each element is a transition element. Mo

A: Solution-The transition elements are located in groups (3 IIIB – 12 IIB) in periodic table , which…

Q: The number of unpaired electrons in the electron configuration of a Cr atom is.

A: Atomic number of Cr = 24  Cr has total 24 electrons

Q: What and the three chemical properties of halogens?

A: Halogen family is the group of elements that is present in Group VIIA of the periodic table.  The…