Which of the following elements is tetratomic in its standard state? O sulfur selenium carbon O phosphorus

Q: Which is a halogen?

A: The element  belonging to group 17 in the periodic table are called  as halogens.   They are…

Q: Indicate the physical state for each of the following elements at 25 °C and normal pressure.…

A: There are three physical state of matter; solid, liquid and gas.

Q: Which of the following pairs of atoms include a metal and a non-metal? 4 a) K and O b) P and Cl c)…

A: Most of the elements of the periodic table are metals. The metals are situated on the left-hand side…

Q: List the name and the atomic number of each element. (a) Mn(b) Ag(c) Au(d) Pb(e) S

A: In the periodic table, elements are arranged based on their similarities in properties. Each element…

Q: Which element is a main-group metal with an evenatomic number? (a) K (b) Ca (c) Cr (d) Se

A: The main group metal with an even atomic number has to be given,

Q: Which of the elements listed below would have atoms with the largest atomic radius?* Carbon…

A: Carbon, Germanium, Silicon & Lead  lie in the same group which is 14th group. Silicon lies below…

Q: What is the chemical symbol of the element found in the 4th family and 5th period of the periodic…

A: Carbon family is called 4th family and there elements are C , Si , Ge , Sn , Pb , Fl

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: Write the symbol for each element and classify it as a metal, nonmetal, or metalloid.a. goldb.…

A: a. b.

Q: which of these elements have the smallest atomic radius? silicon sodium cholrine sulfur phosphorus

A: The question is based on the concept of periodicity of properties. we have to identify the smallest…

Q: The list that correctly indicates the order of metallic character is O F> Cl >S Na > K> Rb B>N>C O…

A:

Q: Which letter represents the atomic radius? A B C O A O B O c None of the above

A: Atomic radius :  An atom is assumed to be spherical in shape with nucleus at its centre.The…

Q: The atom of this element has 5 valence electrons and 2 energy levels. strontium nitrogen barium…

A: The atom of this element has 5 valence electrons and 2 energy levels ?

Q: Select all of the following elements that are categorized as non-metals. OA. Ag O B. K O C.B O D.S O…

A: Non metals : These are the elements which are placed to right corner of the periodic table and have…

Q: Arrange the elements given in order from smallest to largest atomic radii. K Ne Ar Na P

A: Atomic radii is inversely proportional to efective nuclear charge.

Q: Arrange the elements Ca, P, and O in order of increasing atomic radius. O Ca<O<P O Ca<P<O O<P<Ca O…

A: Ca atom have more number of shells than other P and O so that Ca is bigger than P and O  So, that Ca…

Q: Which of the elements listed below would have atoms with the largest atomic radius? * O Indium O…

A: First we will discuss about the concept atomic radius. The atomic radius is the distance from the…

Q: Which of the following atoms have the least metallic character Li Cs Rb K Na

A: We are to find the element with least metallic character among the given Li Cs Rb K Na

Q: 5. An atom of which of the following elements has the smallest atomic radius? a. Cl b. Rb c. Mg d.…

A: Atomic radius is the distance between the center of nucleus and valence electron in the outermost…

Q: Give 3 other applications of the Golden number found in Nature

A: Golden ratio, also known as the golden section, golden mean, or divine proportion, in mathematics,…

Q: what is the properties, electron configuration, orbital diagram of the elements, and the quantum…

A: Carbon(C) is a group-14 element present in the 2nd period of the periodic table.  Being a group-14…

Q: Which element has the LARGEST atomic radius? O Mg O Cs O F

A: Mg Si Cs F                                    Which one has the largest atomic radius.

Q: All metallic elements are solid at room temperature except _________. A. sodium B. calcium C.…

A: At room temperature, mercury is not at solid state. Mercury is  liquid above 0°C Temperature This is…

Q: For many elements on the periodic table EA 1 has a positive value and EA 2 has a negative value.…

A: Electron affinity is the amount of heat is rejected due to addition of one electron in the outer…

Q: The element belonging to group 3A and period 4 is Gallium Scandium Silicon Aluminum

A: The given questions asks about the identity of element which belongs from 4th period and 3A group.

Q: Silane, SiH., is a colorless, pyrophoric, toxic gas that is used to deposit elemental silicon for…

A:

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: Which of the following elements has the smallest value of IE3? Select the correct answer below: Na…

A: Introduction : Ionisation energy is defined as the amount of energy required by an isolated gaseous…

Q: Write out the electron energy diagram, full electron configuration, and condensed electron…

A: Hello. Since the question contains more than three sub-parts, the first three subparts shall be only…

Q: Which of these elements has the highest first ionization energy? silicon sodium chlorine sulfur…

A: Ionization energy: The amount of energy required to remove a valence electron from neutral, gaseous…

Q: Of the following elements, the one with the largest atomic radius is____ A)aluminum  B)calcium…

A:

Q: The electron configuration of an atom determines how much energy is involved in its reactions. The…

A: As Rubidium lies below K in the same group, its property to react with water will be similar to the…

Q: Identify which of the following atoms would have the largest radius. A) Mg B) Mn C) Ba D) Bi E) Br

A: As we move from left to right in a period then radii decreases. As we move from top to bottom then…

Q: Which of the following are paired correctly? Chlorine Cl2 Sulfur S4 Phosphorus Nitrogen N

A: We know that, Chemical symbol of , Nitrogen is N

Q: 1. Which of the following elements would you expect to behave most like magnesium? A) Sodium B)…

A: Since you have posted multiple questions, we will solve only first question for you. If you want…

Q: In each of the following pairs, choose the ion with the larger ionic radius: a) K* and Na* b) K* and…

A: In modern periodic table:  On moving from left to right across the period, size and ionic radii…

Q: Which of the following elements would you expect to have chemical properties most similar to those…

A: on the basis of the periodic table, we can say that the elements that belong to the same group have…

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: Choose the block of the periodic table where phosphorus is located. O s-block O f-block O outer…

A:

Q: 96. Solid fuel in the booster rockets for spacecraft consists of alumi- num powder as the fuel and…

A: The equation for the combustion reaction of aluminum is as follows: Calculate the standard enthalpy…

Q: Which element listed below would have the lowest first ionization energy?   K Cl Ca Br Se

A: Electronic configuration refers to the systematic arrangement of electrons in the various shells and…

Q: Identify the group and period to which each of the following elements belongs: Si element number…

A: 1) Silicon i.e Si : Silicon is an element which is present in the carbon family in the periodic…

Q: Write the electron configurations for each of the following elements:(a) Sc(b) Ti(c) Cr(d) Fe(e) Ru

A:

Q: Arrange these elements according to electron affinity. Br S Ar

A: Electron affinity of an atom or molecule is defined as the amount of energy released when an…

Q: An element that has the same valence electron configuration as tin is:   antimony tellurium…

A: Elements of same group has same valence electron configuration as the only change that happens on…

Q: Which of the following describes the element I? Choose all that apply. is very reactive as a…

A: I is very reactive non-metal (i is belong to group 17 . in group 17 all metal are non metal) I…

Q: Which of the elements listed below has a lower ionization energy? O Argon Phosphorus

A: Introduction The energy which is required to remove the electron (most loosely bounded electrons)…

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.

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.