What safety precautions should be taken with selenium? I am preparing to remove selium from water using a sorbent. Why is selenium toxic and should be removed from water sources? How should a selenium and water solution be disposed of?

Q: Which of the following statements are true?(a) Both nitrogen and phosphorus can form a…

A: a) Both nitrogen and phosphorus can not form a pentafluoride compound. Nitrogen can not form…

Q: Write balanced chemical equations for the following reactions:(a) cadmium burned in air(b) elemental…

A: (a)

Q: Why Lanthanoides and actinoides are placed at the bottom of the periodic table?

A: The reason why lanthanoids and actinoids are found at the bottom of the periodic table has to be…

Q: Give some examples of Metallic hydrides?

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

Q: Discuss the Production of the Halogens?

A: The production of halogens has to be discussed below.

Q: Why does aluminum, which has less mass than magnesium, produce approximately the same amount of…

A:

Q: 3. Write equations for the reactions of Strontium hydride and radium peroxide with water. а. b.

A: 3.  a) • We need to write the reaction of strontium hydride with water.    • Since, we know that,…

Q: How are ionic hydrides formed?

A: Ionic hydrides are compounds that form between hydrogen and highly active metals, mainly with the…

Q: Explain why phosphorus forms pentahalide whereas nitrogen and bismuth do not?

A: The geometry (or hybridization) of a molecule depends on the electrons present in the outer shell as…

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: * ?What is used to test for chlorine A a glowing splint O B damp litmus paper O C limewater D…

A: Chlorine is member of seventeen group elements, halogen group. It is a pale green gas and has a…

Q: A) if both sentences are true, (B) if both sentences are false, (C) if the first sentence is true…

A: Few questions based on general chemistry that are to be accomplished.

Q: Chlorine reacts with oxygen to form Cl2O7. (a) What is thename of this product (see Table 2.6)? (b)…

A: a. Chlorine reacts with oxygen to form Cl2O7. Given oxide has two chlorine atoms and seven oxygen…

Q: What are the two most abundant elements by mass in the earth’s crust, oceans, and atmosphere? Does…

A: The main composition of amino acid is carbon, oxygen, hydrogen, and nitrogen. Since Earth's crust…

Q: Define the term, Boron?

A: Solution- Boron is a chemical compound which is found in nature. In the periodic table no of the…

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: Explain in detail the process of production of beryllium.

A: Beryllium is a chemical element having symbol Be and atomic number 4 having electronic configuration…

Q: Which noble gas is the most abundant in the universe? In Earth’s atmosphere?

A: Noble gases are the elements of group 18 of the periodic table. Another name given to them is inert…

Q: (a) What are the common oxidation states of the halogens?(b) Give an explanation based on electron…

A: To explain the oxidation state of the halogens

Q: What are the two most abundant elements by mass in the earth's crust, oceans, and atmosphere? Does…

A: In atmosphere, Nitrogen and oxygen are most abundant elements as N2 gas compared of 78 % and 21 % O2…

Q: Why KMNO, is stored in amber colored bottles?

A: Amber coloured bottles have an ability to filter UV (ultraviolet) radiation thereby protect the…

Q: Using equations, describe the reaction of water with potassium and with potassium oxide.

A: Potassium is an element that belongs to group 1 which are called active earth metals.Hence,Potassium…

Q: Which element is most reactive with water? [A] Ba [B] Li [C] Ga [D] Cs

A: Reactivity of an element depends on the ionization energy of the element. Higher is the ionization…

Q: 8. Write equations for the reactions of Strontium hydride and radium peroxide with water. а. b.

A: Alkaline earth metals are chemical elements in group 2 of the periodic table. Group 2 elements are…

Q: Why ZnO appears yellow on heating?

A: The interruption of patterns in the solid crystal leads to the formation of defects.Stoichiometric…

Q: Predict whether the bonding in the oxides of the following elements is covalene or ioe Explain your…

A: The bonding in the oxides of the Aluminum and phosphorus is explained as follows.

Q: Why is Group I elements known as the most electropositive element?

A: Electropositive nature of the elements is determined by their ability to lose the valence electrons.…

Q: Give 5 behavior and properties of metallic bonding

A: ANSWER IS DISCUSSED BELOW :

Q: Nitrogen is relatively inert as compared to phosphorus. Why?

A: Nitrogen is relatively inert as compared to phosphorus. An explanation of the above statement has to…

Q: In the alkali metal group, the Cesium is less reactive than lithium.

A: To find: Whether the given statement is true or false.

Q: Which is a zinc ore and is used in paints, sunscreen and coins? A. Anhydrite B. Bauxite C.…

A:

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

A:

Q: Why are melting and boiling points of alkali metals low?

A: Melting point and boiling point depends on the intermolecular forces. Higher the intermolecular…

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: Explain why phosphine, PH3, is less polar than ammonia?

A: The less polarity of PH3 than NH3 is discussed below,

Q: What and the three chemical properties of halogens?

A: Halogen family is the group of elements that is present in Group VIIA of the periodic table.  The…

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…

Group 13 Elements

In the periodic table, group 13 elements exist in the first p-block. There are six elements present in group 13, which include boron (B), aluminum (Al), gallium (Ga), indium (In), thallium (Tl), and element 113 (ununtrium, (Uut)). Group 13 elements are also designated as the boron family.