Complete and balance the following equations:(a) An active metal reacting with acid,Al(s)+HCl(aq)→ (b) A salt like (alkali metal) hydride reacting with water,LiH(s)+H2O(l)→

Q: 1. Write the balanced equation of the reaction between Al and oxygen in the presence of heat.  2.…

A: Balanced chemical equation occurs when the number of the different atoms of elements in the…

Q: What are amphoteric oxides? Give examples?

A: Metal oxide that behaves as acid as well as base are called amphoteric oxide. Such metallic oxides…

Q: Titanium(III) oxide is prepared by reaction of titanium(IV)oxide with hydrogen at high temperature.…

A: Oxides are the compounds having one or more oxygen atoms combined with other elements. The binary…

Q: Write the chemical formula for each of the following compounds, and indicate the oxidation state of…

A: The group 6A elements are called chalcogens, which is the first group in the p-block having no…

Q: Is each oxide basic, acidic, or amphoteric in water: (a) MgO; (b) N₂O₅; (c) CaO; (d) CO₂; (e) TeO₂?

A: Since we answer only upto 3 sub-parts so we'll answer first three sub-parts. Please resubmit the…

Q: An element forms an oxide, E2O3, and a fluoride, EF3.(a) Of which two groups might E be a member?(b)…

A: a) The oxidation state of E is +3 as it forms E2O3 and EF3 thus E belongs to 3A or 3B group.

Q: Select the member of group 4A that best fits each description:(a) forms chains to the greatest…

A: A given element is said to be metallic in nature if it can lose electrons while it is non -metallic…

Q: Write the chemical formula for each of the following compounds, and indicate the oxidation state of…

A: Oxidation state is defined as the charge on the atom of an element present in bonded state with…

Q: (a) What is the range of oxidation states shown by the elements of Group 5A(15) as you move down…

A:

Q: Nitric acid forms an oxide of nitrogen on reaction with P4O10. Write the reaction involved. Also…

A: The electron dot formula shows the valence electrons which form the bond between the atoms in a…

Q: A binary hydride can be synthesised through the following methods EXCEPT: Select one: a. The…

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Q: Qu) Are The elements sodium, aluminum, and chlorine are in the same period? And give the right…

A: The given elements sodium, aluminum and chlorine lie in the third period of periodic table. Their…

Q: Cxygen and Tellurium are both chalcogens, however while oxygen form carbondioxide with carbon, a…

A: In the carbon dioxide and carbon ditelluride, the carbon and other elements form double bonds. The…

Q: Describe the oxidising action of potassium dichromate and write the ionic equations for its reaction…

A: As, Potassium dichromate is powerful oxidising agent in acidic medium.  And in Presence of dilute…

Q: Which alkali metal has maximum ionic mobility in aqueous solution?

A: Alkali metals exits as hydrated ions in aqueous solution.As the size of the metal ions increases,…

Q: Complete and balance the following equations:(a) An active metal reacting with acid,…

A: A chemical reaction is the symbolic representation of the conversion of substances to new…

Q: Explain the differences in chemical and physical properties of metals and nonmetals, including the…

A: Metals are placed on the left-hand side of the periodic table, and non-metals on the right-hand side…

Q: Write balanced equations for the following reactions: a. The decomposition of dinitrogen oxide gas…

A: a. The decomposition of dinitrogen oxide gas to its elements: Dinitrogen oxide gas is decomposed…

Q: What mass of CO2 is produced from the decomposition of 25.5 grams of NaHCO3?

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Q: What is the oxidation number of S in the compound Na,S,O5?

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Q: What is the VSEPR geometrical shape of the silicate ion, SiO32- ?

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Q: what is the chemical formula created when aluminum (13) bonds with the polyatomic ion hypochlorite?

A: Aluminium has an atomic number 13 which reacts with polyatomic ion such as hypochlorite ion ClO- to…

Q: Why is beryllium carbonate unusually unstable thermally as compared to the other carbonates of this…

A: Beryllium belongs to group 2 in the periodic table. The carbonates of this group are - BeCO3, MgCO3,…

Q: Write a balanced chemical reaction for the reaction of S2O32- ions with bromine to give bromide and…

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Q: Describe the role of the following :(i) NaCN in the extraction of silver from a silver ore(ii)…

A: Given process, (i) NaCN in the extraction of silver from a silver ore(ii) Iodine in the refining of…

Q: Write the chemical formula for each of the following compounds,and indicate the oxidation state of…

A: Chemical formula represents the chemical proportions of atoms in a molecule. Group 6A of the…

Q: Explain the observation for the increasing stability of the n+2 oxidation state in the heavy main…

A: Answer - A heavy element is an element with an atomic number greater than 92. The first heavy…

Q: Complete and balance the following equations:(a) A salt like (alkaline earth metal) hydride reacting…

A: Balance chemical reaction is the representation of reactant and product in such a way that the…

Q: Cr20, + 14H* (aq) + 12e¯ → 2Cr(s) + 7H20 (aq) a) How many hours would it take to completely convert…

A: Answer-a Each mole of potassium dichromate has one mole of dichromate ion, therefore moles of…

Q: Why is boron limited to a maximum coordination number of four in its compounds?

A: The element Boron belongs to the p-block where the last electron must enter into the p-subshell. The…

Q: Explain why, at room temperature, fluorine and chlorine are gases, bromine is a liquid, and iodine…

A: A chemical compound consists of two or more different elements which are bonded with each other…

Q: Why does the reactivity of the alkali metals decrease from cesium to lithium?

A: The alkali earth metal include: Li, Na, K, Rb and Cs. They have a valence electron configuration…

Q: Write the chemical formula for each of the following compounds, and indicate the oxidation state of…

A: The chemical formula of Hydrogen telluride is :  H2Te

Q: Write a balanced equation to show: The formation of gas bubbles when cobalt reacts with hydrochloric…

A: A balanced equation is that chemical equation\reaction in which the number of atoms of each element…

Q: Name the following compounds and assign oxidation states to the halogens in them: (a) KClO3

A: The given compound is KClO3 To find: Name of the given compound Oxidation state of the halogen

Q: Write the chemical formula for each of the following compounds,and indicate the oxidation state of…

A: (a) The chemical formula of sulfur tetrachloride is SCl4 Sulfur is the Group 6A element present in…

Q: (b) Is boron a metal or a non-metal? Give reasons for your answer. (c) Why is aluminium a useful…

A: Element can be classified as metal and non metal

Q: 21. Describe the hybridization and the bonding of a silicon atom in elemental silicon.

A: The mixing of two atomic orbitals to form new hybrid orbitals with different shapes, energy as…

Q: Write the chemical formula for each of the following compounds, and indicate the oxidation state of…

A: Chemical formula of Sodium hypochlorite is NaClO  or  NaOCl . Oxidation state of Na = +1 Oxidation…

Q: Suppose 10.00 g of an alkaline earth metal reacts with 10.0 L of water to produce 6.10 L of hydrogen…

A: The reaction of alkaline earth metal, X and water – X + 2H2O →XOH2 + H2

Q: Write balanced equations for the following reactions: a.) the heating of aluminum carbonate (b.) the…

A: The chemical equation is the representation of the conversion of reactants to products. The…

Q: What is the most simple silicate material, chemically?

A: The material which is ionic in nature and have Silicon and oxygen as their anion is known as…

Q: Bismuth(V) compounds are such powerful oxidizing agents that they have not been prepared in pure…

A: All known elements are placed in the Modern periodic table in increasing order of their atomic…

Q: What mass, in grams, of hydrogen gas forms during the complete reaction of 10.01 g of calcium with…

A: Given: Molar mass of Ca=40.078 g/ mol. Given mass of Ca=10.01 g

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…

Group 15 elements

The elements of group 15 are phosphorus, nitrogen, bismuth antimony, and arsenic. The most abundant element which is present in the air is nitrogen and the percentage of nitrogen present in the air is 78%. In the free state, the elemental nitrogen is present as diatomic gas (N2). In the organic matter obtained from plants and animals, phosphorus is the dominant element present. In nucleic acids, phosphate groups are present. Phosphates are also found in teeth and bones. The other elements arsenic, bismuth, and antimony are found as sulfides. Arsenopyrite, bismuth glance, and stibnite are examples of sulfides of arsenic, bismuth, and antimony respectively.