Calculate the mass of Li if... In a reaction between water and lithium, 82.14 J of energy was released. The molar enthalpy change with respect to lithium for this reaction is +59.00 kJ/mol Li.

Q: Why do Na and K have similar properties?

A: Valance shell: It is the outermost shell of an atom. The electrons of the valance shell have the…

Q: What is the charge of an oxide ion?

A: An oxide ion is the anion of oxygen. Oxygen when reacts with metal form metal oxides.

Q: Periodic Table of the Elements CI Mn Te I Xe lodine would have chemical properties most like which…

A: This is the long form of the periodic table which consists of horizontal rows called periods and…

Q: What ions are possible for the two largest stable elements in Group 4A(14)? How does each arise?

A: The atomic number of Sn is 50 so its electronic configuration is [Kr] 5s24d105p2. It can lose 2…

Q: In what physical state does chlorine exist at −65°C?

A: The physical state of an element depends upon its boiling point and melting point temperatures.

Q: Calculate the energy change per mole for the following reaction? H+HHe The mass of H is 2.01355 amu…

A:

Q: does electron gain enthalpy depends upon atomic size?

A: The trends within the periodic table describe the change in the properties such as atomic size,…

Q: When a halogen forms an ion, what is the charge of the ion? When the nonmetals in the oxygen family…

A: Ions are formed from neutral atoms by either gaining or losing of electrons.  Cation is formed if an…

Q: What is the number of electrons for GaI3?

A: The question is based on the concept of chemical bonding. We have to identify total electron present…

Q: Which of the following statements about atomic structure is true? O The periodic table arranges…

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

Q: Is astatine a nonmetal metal or metalloid

A:

Q: Of the five elements Sn, Si, Sb, O, Te, which has the most endothermic reaction? (E represents an…

A: When the atoms absorb energy during the reaction, the reaction is endothermic. The absorbed energy…

Q: the number of electron domoins hy bridiea tio What is on the Or Cent ra l ond in p Brg? atom it

A: valence electrons on P = 5 Electrons on 3 Br atoms for bonding = 3 Total electrons = 8 Electron…

Q: If an element of group I-A joins with an element of group VI-A, what type of bond is formed? Why?

A: In this question, we will discuss about type bond bond when two elements are joined from different…

Q: What are the compounds formed by the elements of Group VIIA and VIIB?

A: Group VII A : This group of the periodic table refers to the halogens. They are Fluorine , Chlorine…

Q: The atomic radius is half the distance between the nuclei of two joined atoms إختر واحداً: ibs

A: Choose that given statement is true or false?

Q: Explain the organization of an atom of carbon.

A: The protons, neutrons, and electrons are the salient features of an atom. The protons present in the…

Q: Magnesium is an important element in the human body,especially in bones. Magnesium’s atomic number…

A: Magnesium atomic symbol is Mg. Magnesium atomic number is 12. This number indicates that the neutral…

Q: If one gallon of gasoline contains about 2.0 g of lead, how much lead (in kg) is emitted into the…

A: The given data contains, one gallon of gasoline contains 2.0 g of lead.

Q: What is Coulomb’s law? Explain how the potential energy of two charged particles depends on the…

A:

Q: Describe each of the Hydrogen isotopes, as well as their ions

A: Mainly three isotopes of Hydrogen occurs in nature. These are  protium (1H), deuterium (2H) and…

Q: Which of the following elements is stable? O Sodium in group 1 Aluminum in Group 13 O Chlorine in…

A: Argon in group 18

Q: What are the compouds formed by the elements of Group VIIA and VIIB?

A: The elements in the periodic table are arranged in the increasing order of their atomic numbers.…

Q: Which of the following is the smallest in terms of energy? a.IE1  of Na b.IE1  of Kr c.IE2  of Na…

A: Ionisation energy

Q: Which of the following combination of elements is the most reactive? Cs and I Na and Br Cs and Br…

A: Greater is the difference in electronegativity between two atoms in a molecule, higher will be the…

Q: What kind of charge is predicted to form by aluminum (Al)?

A: Given Element = Al Atomic Number of Al =13 Charge =?

Q: Consider the following data for nickel: atomic mass electronegativity electron affinity ionization…

A:

Q: What are alums? Give examples other than potassium alum.

A: Double salts are the salts that dissociate into all its constituent ions completely. Example is Mohr…

Q: Valence electrons in an atom of phosphorus are closer to the nucleus than the valence electrons of…

A: The objective of the question is to explain using the given options that why is that - "Valence…

Q: what are 2 incompatible elements? are calcium and chlorine incompatible?

A: Rubidium, Barium, Uranium, and Lanthanum are incompatible elements.

Q: сH, (сн), сн, 0) + о, (e) - со, (8) + н,о(з) co,(g) + H,0(g) 5

A:

Q: When the following atoms (Li, S, Ca and F) become ions, what charges will they acquire?

A:

Q: Which of the following are isotope pairs?

A: an atom has electron, proton, neutron atomic number =number of proton mass number = sum of proton +…

Q: Describe the fundamental properties of electric charges?

A: Given information,   Fundamental properties of electric charges

Q: An element X reacts with hydrogen to form a compound of formula HX. In which group in the periodic…

A: An element X reacts with hydrogen to form a compound of the formula HX. In which group in the…

Q: Which of the following elements would you expect to have similar properties? As Te Ar Sn He

A: The element present in the same group of the periodic table has the same chemical properties. The…

Q: What is the reaction that corresponds to the first ionization energy of potassium, K? Express your…

A: • We need to write the reaction that corresponds to the first ionization energy of potassium.

Q: An Element from Group 5A and Group 6A shared a Chemical Bond. This entails that

A: The 5A and 6A are the groups present towards the right side of the periodic table. The elements of…

Q: Which are Five Electron Groups?

A: The molecules, such as PCl5, SF4, and ClF3, are the five electron groups. However, the geometries of…

Q: Write The ortel Diugranm For The Al-m preuseex plaan c.Ar d.Ca

A: The detailed solution of your question given below-- We know that the atomic number of Ar and Ca is…

Q: In what ratio would you expect Mg and Cl to combine? Why?

A: The electronic configuration of Mg and Cl is given below.

Q: the measured EA of Na is -53 KJ/mol. What is the physical meaning of the fact that the EA is a…

A: EA means the electron affinity .  The amount of heat is released when 1 electron is added to the…

Q: Which element is solid at room temperature and a good conductor of heat and electricity

A: We have to find in the given options which element is solid at room temperature and a good conductor…

Q: Name the five Electron groups?

A: There are two types of electron groups: any type of bond—single, double, or triple—and lone electron…

Q: According to Coulomb's law, which ionic compound A-D has the smallest electrostatic potential energy…

A: Given: Order of size of anions = F<Cl<Br<I To find: Ionic compound that has smallest…

Q: 32. In which group do all the elements have similar chemical properties? a) P, S, Cl b) Ag, Cd, Ar…

A: 32.  The element present in the same group of the periodic table has the same chemical properties.…