Indicate the physical state for each of the following elements at 25 °C and normal pressure. Classify each element as a metal, nonmetal, or semimetal: (a) barium (b) boron (c)bismuth (d) bromine

Q: Sulfur

A: Sulfur is a non-metal element present in periodic table of Group 16.

Q: Which one of the following elements is an example of a transition metal in period 4? а. Carbon O b.…

A: Transitions metals are also known as d-block elements. These are present in the middle of the…

Q: Boron is difficult to obtain in its pure form because of its: (a) high meltir point. (b) very…

A: Metals are the electropositive elements.

Q: What correlation, if any, exists for the Period 2 elements between group number and the number of…

A: The number of electrons in an element is equal to its atomic number. In order to become stable an…

Q: Give some examples of Metallic hydrides?

A: The examples of metallic hydrides has to be given.

Q: An oxide in Period 3 reacts with NaOH and HCl to form salts. What is the formula of the oxide A CO:…

A: A multiple choice question based on periodic table, which is to be accomplished.

Q: period 4 element with the smallest atomic radius

A:

Q: Use the periodic table to classify Ce (cerium) as a metal or a nonmetal, and then further classify…

A: Ce belongings to f block element and of Lanthanides series. and Lanthanides are metals.

Q: 7. How many moles of white phosphorus (P4) fluoroapatite? can you produce from 1 ton of

A: The number of moles of a compound can be determined by the balanced chemical reaction. A reaction…

Q: Summarize the physical properties of the elements ingroup 14.

A: The elements present in group 15 are Carbon (C), Silicon (Si), Germanium (Ge), Tin (Sn), Lead (Pb),…

Q: Explain quaternary Metal oxides?

A: Metal oxides are made up of metal cation and oxygen anion. for distinguishing the metal oxides , one…

Q: Which oxide is acidic.  Calcium oxide Copper oxide Magnesium oxide  Or sulphur oxide

A: Acidic oxide:- It is an oxide that produces an acidic solution of mixing with water.

Q: State the trends in the following chemical properties of period 3 elements: A. Reaction with water…

A: Period 3 elements: The elements belong to period 3 are Sodium (Na), Magnesium (Mg), Aluminum (Al),…

Q: С. Describe and explain two important properties of sodium in liquid ammonia.

A: Liquid ammonia is a polar solvent which gets self ionized and forms ammonium cation and amide anion.

Q: Explain how the following properties change across the periodic Table from group 1 to group 2, and…

A: In the modern periodic table, the vertical columns are called as Groups and the horizontal rows are…

Q: why fluorine is pale yellow in colour?

A: Fluorine is the smallest element in halogen group so the attractive force between the nucleus and…

Q: Which of the following statements is (are) true about lithium, a Group I element of the Periodic…

A: Option 1 is correct Because the ionic salts give a deep red flame colour.

Q: Why is zinc not regarded as a transition element?

A: Transition metal has incomplete d subshell in one or more than one oxidation state.

Q: A ferromagnetic element is one that O a there is no magnetic force Ob magnets strongly attract…

A: The ferromagnetic elements are:

Q: 4. This question concerns the d-block elements, Sulphur, Nitrogen and Group IV elements,. (a) (i)…

A: (i) The main difference between d block elements and transition metals is that d block elements have…

Q: If copper is able to displace magnesium, and magnesium is able to displace lead, what does this mean…

A: From the given data we can infer that , Copper is more reactive than magnesium , and Magnesium is…

Q: Describe the chemical and physical properties of Potassium ?

A: Potassium (symbol K) is an element of the group 1 (alkali metals) of the periodic table. The atomic…

Q: Would you expect manganese(II) oxide, MnO, to react morereadily with HCl(aq) or NaOH(aq)?

A: Manganese(II) oxide (MnO) is a metal oxide and it can readily react with acids to form its salt and…

Q: Which element has the following general properties: solid at room temperature, high luster,…

A: A solid-state is the state that has neither change in shape nor change in volume that means both are…

Q: Describe the physical properties of metals?

A: The physical properties of metals has to be given,

Q: (a) One of the alkali metals reacts with oxygen to form a solidwhite substance. When this substance…

A: The periodic table is the representation of the elements in the increasing order of their atomic…

Q: Describe the Disproportionation of chlorine with cold and hot alkali.

A: In alkaline medium ,Halogens involve in Disproportionation reaction (except F) In this type of…

Q: Which of the following statements is INCORRECT? Germanium is classified as a metal. Lead is…

A:

Q: Select one of the alkali metals and write a balanced chemical equation for it's reaction with…

A: Alkali metals are group 1 metals  Hence let's take sodium metal i.e Na

Q: Name two metals which occur in nature as oxides.

A: Metals are the elements which lose electrons to acquire a stable electronic configuration. When loss…

Q: Write a balanced equation for the reaction of elemental strontium with each of the following:(a)…

A: Interpretation - To write a balanced equation for the reaction of elemental strontium with each of…

Q: Sodium chloride and strontium chloride are both white solids. How could you distinguish one from the…

A: Na and Sr belong to Group IA and IIA in the periodic table respectively. They have a valence…

Q: Cesium has higher melting temperature than Sodium.   True or False?

A: Given : We have to tell whether the statement is true or not.

Q: The Group 1A elements A) melt at high temperatures B) are unreactive and are rarely found in…

A: Group 1A element are also called alkali metals. Li, Na, K, Rb, Cs.  Group I elements have 1 valence…

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: Explain how the following properties change across the periodic Table from group 1 to group 2,and…

A: Since your question has multiple sub-parts, we will answer first three sub-parts for you. If you…

Q: Simplified explanation of nitride and carbon in minerals, simplified explanation of the mechanism of…

A: Explanation- @ Nitride in minerals-       In chemistry, a nitride is a compound of nitrogen where…

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

A:

Q: What is the common ore of tin and how is tin separated from it?

A: Tin is a malleable metal which isn't oxidized in air easily.

Q: Give the properties of the oxides in a particular period.

A:

Q: Discuss each conclusion from a study of redox reactions:(a) The sulfide ion functions only as a…

A: Reducing agent is the substance which contains the element in the lowest oxidation state. While,…

Q: What is the main characteristic that determines whether or not an element is a main-group element?

A: Transition metal elements forms covalent bond easily with other elements than the Main group…

Q: Write a general equation for the reaction of a halogen with each substance.a. a metal b. hydrogen c.…

A: 17th family members are termed as halogens. Halogens are reactive species, they react easily with…

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.