In nature, the noble gases exist as A the sulfides B) the gaseous fluorides c) monatomic gaseous atoms D alkali metal salts E) solids in rocks and in minerals

Q: Write the valence electron configuration for each of thefollowing:a. alkali metals                b.…

A: a. alkali metals    Valence electron configuration = ns1       b. Group 4A (14) Valence electron…

Q: A _________ oxide is covalent and will react with water to form __________, which produce    _____…

A: Oxides are of two types : 1. Acidic oxides  2. Basic oxides

Q: III. Name one element in the Halogen Group.

A: Halogen group means, group 17 element in the periodic table. see below

Q: Are metalloids electrical semiconductors? Explain with an example?

A: Are metalloids electrical semiconductors have to be explain with an example,

Q: What is lithium?

A: Pure substances that are made up entirely of atoms and have the same number of protons in their…

Q: Why is chlorine a halogen

A: Given question is : Why is chlorine a halogen = ?

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: Why is calcium more reactive than magnesium in general? and why is calcium less reactive than…

A: This question is based on general periodic table trends. We will analyse and find the answer based…

Q: What are the three types of oxides? Using chemical equations and any other information to support…

A: Three types of oxides: 1. Acidic oxide 2. Basic oxide 3. Amphoteric oxide

Q: Why are main group elements much simplier than the transition metals?

A: Introduction- The whole of periodic table is divided into- Main group elements- The elements of…

Q: Until the early 1960s the group 8A elements were called the inert gases; before that they were…

A: (a) The term inert is used for the unreactive elements which are not involved in any reactions. Some…

Q: (a) Why is calcium generally more reactive than magnesium?(b) Why is calcium generally less reactive…

A: a.

Q: Which of the following statement is untrue regarding halogen? Can exhibit multiple oxidation state…

A: Group 17th or the second last group of the periodic table is known as the halogen group.

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: which is most rare noble gas?

A: The rare gas is a gas that is present in very small amounts in the air. The rare noble gases are…

Q: Use the References to access important values if needed for this question. Use the following key to…

A: 1.Oxygen ----- Molecules The elemental form of Oxygen is O2 (Molecular Oxygen) and O3(Ozone). 2.…

Q: Use the periodic table to determine  quantity. the number of 4p electrons in Br

A:

Q: When a nonmetal oxide reacts with water, it forms anoxoacid with the same nonmetal oxidation state.…

A: Since there are multiple sub-parts in the question , only the first 3 sub-parts of the question are…

Q: halogens are considered to be most reactive non metallic element. Why?

A: Halogens belong to group 17. They have 7 valence electrons. They are short of only one electron to…

Q: Helium is an inert gas, meaning that it doesn't readily combine with other elements. What five other…

A: Given, Helium is an inert gas, meaning that it doesn't readily combine with other elements.

Q: Rank the elements from most reactive to least reactive.

A:

Q: What is the trend in boiling point as the atomic size/ mass increases? What does the boiling point…

A: The noble gases generally exists as the monoatomic gases because of their stability as they possess…

Q: (a) Would you expect scandium oxide to be a solid, liquid, or gas at room temperature?

A:

Q: What are classifications of iodine? Mark all that apply Halogen Nonmetal Metal Group 17 Transition…

A: We know that, Atomic no. of iodine= 53

Q: Explain why Be and Mg form metallic hydrides instead of ionic hydrides like the other elements in…

A: Be and Mg forms metallic hydrides instead of ionic hydrides and the two possible reasons are their…

Q: Until the early 1960s, the group 8A elements were calledthe inert gases. (a) Why was the term inert…

A: (a) The term inert is used for the unreactive elements which are not involved in any reactions. Some…

Q: gro periodic lable WUuI snonnɔuLƏUn element :X: be found Alkali metals .A O .B O Halogens .C O…

A: Given element have 7 electrons in their valence shell

Q: The atomic radius of elements decreases along the period but Neon has highest size among III period…

A:

Q: Which of the following is the proper dot diagram for fluorine? 卡: B O Diagram A O Diagram O Diagram…

A: The solution is as follows :

Q: Compare and contrast the characteristics of the theoretical materials of metallic materials (iron)…

A: Non destructive testing is method used by industry to evaluate properties of materials, components,…

Q: What ions are part of the silver group?

A: Different basic radicals have different solubility products and are precipitated by different…

Q: What do the elements sulfur (S), nitrogen (N), phosphorus (P), and bromine (Br) have in common? A.…

A: The elements Sulfur(S), nitrogen(N), phosphorus(P), and bromine(Br) all situated on the right-hand…

Q: What is the chemical formula for sodium perchlorate?

A: The chemical formula - It is the representation of the chemical composition  of the compound

Q: In the periodic table, elements in group VIA ________________   a. can form 2 bonds   b. have…

A:

Q: 16. In the periodic table, the element hydrogen is sometimes grouped with the alkali metals and…

A:

Q: Relate the properties of alkali and alkaline earth metals to their locations on the periodic table…

A: Alkali metal is placed in group 1 . As they are placed in group 1 ,they show +1 valency because they…

Q: Silicon is a metalloid element commonly found in Earth's crust. It helps form many different…

A: The arrangement of elements based on their atomic number as rows and columns provides the tabular…

Q: Use the References to access important values if needed for this question. The following Lewis…

A:

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: What is an alkali

A: Earlier, the alkalinity and acidity of a compound were determined by its taste. The alkali and acid…

Q: Write a balanced equation for the reaction that occurs in each ofthe following cases: (a) Chlorine…

A:

Q: The atomic radius for radioactive radon (Rn) is Density for radioactive radon (Rn) is Boiling…

A: Radon is an element having atomic number 86. Its symbol is Rn.

Q: what is the reaction of phosporus with oxygen a?

A: Write reaction between phosphorus and oxygen ?

Q: The elements are arranged in the periodic table by A - the valence orbital in which the last…

A: In modern periodic table, the elements are arranged to their atomic numbers. While previously in…

Q: What characteristics of Boron are similar to Group 14 elements

A: Boron is belongs to group 13th . The outer most electronic configuration of boron family is ns2np1.…

Q: Whats the electron configuration for Sr2+

A:

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.