The symbol and atomic number of the lightest metalloid in Group 4A are:

Q: An element X has 16 protons (p+1); 16 electrons (e-1) and 16 neutrons (n0). b) What is the period…

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Q: What element is found in period 4, group 4A? Use the atomic symbol to identify the element.

A: Given : Period of element is 4  Group of element is 4 A.

Q: 66. Which element do you expect to be most like magnesium? Why?(a) potassium(b) silver(c) bromine(d)…

A: Magnesium = Its atomic number is 12, and present in Group 2 in the periodic table.

Q: Ammonia is a gas with a characteristic pungent odor. It is sold as a water solution used in…

A: The atomic mass of N relative to H in a sample of of ammonia contains 7.933 g N and 1.712 g H, it is…

Q: Identify these elements based on their locations in the periodic table. Give the symbol, not the…

A: Group 1A (or IA) of the periodic table are the alkali metals:  hydrogen (H), lithium (Li), sodium…

Q: Define the term monatomic ion?

A: The term monatomic ion has to be defined.

Q: A robot spacecraft returned samples from the planetesimal 98765 ALEKS, located in the outer Solar…

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Q: You have made up a new non-metal element, Lolium, and produced a gaseous compound from it with a…

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Q: In Groups 1A-7A, name all elements in each group that has the smallest atomic radius?

A: Atomic radius of an atom is dependent upon the following factors: Effective nuclear charge…

Q: Potassium has an atomic number of 19 and an atomic mass of 39 (ignore the possibility of isotopes…

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Q: What is the formula of the compound in which the atom combining ratios are: sodium : fluorine 1:1 =…

A: The chemical formula of a compound is the representation of the chemical composition in a symbolic…

Q: Identify the missing information for each atom or ion. Note that the atoms and ions are not…

A: For any atom its atomic number is equal to the number of protons as well as number of neutrons.…

Q: Identify each of the following elements as a metal, nonmetal,or metalloid: (a) gallium, (b)…

A: Metals are those elements which show metallic properties like shiny appearance, ductile and…

Q: dentify the missing information for each atom or ion. Note that the atoms and ions are not…

A: 1) A.  Mass number of selenium, M = 76 Charge on Selenium C = -2 Atomic number of selenium Z = 34…

Q: A monatomic ion has a charge of +2. The nucleus of the ion has a mass number of 62. The number of…

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Q: (d) the ion with 74 electrons, 116 neutrons, and a +3 charge

A: Answer:Mass number of the element is always equal to the sum of number of protons and number of…

Q: Identify these elements based on their locations in the periodic table. Give the symbol, not the…

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Q: Identify these elements based on their locations in the periodic table. Give the symbol, not the…

A: Given,  period 6, group 1 (1A)  period 4, group 12 (2B) period 2, group 15 (5A)

Q: The isotope carbon­11 does not occur in nature but has been made in the laboratory. This isotope is…

A: Given: The carbon isotope= C611

Q: Identify each of the following elements as a metal, non-metal, or metalloid: (a) phosphorus, (b)…

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Q: noble gases are also considered to be rare gases. why?

A: Helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn) are called rare gases…

Q: The elements of group 4A show an interesting change in properties moving down the group. Give the…

A: The name and chemical symbol of each element in the group 4A is to be given and label it as a…

Q: Two common oxides of iron are FeO and Fe2O3. Based on this information, tell how you would predict…

A: Iron has two common oxidation state, Fe2+ and Fe3+. To differentiate between Fe2+ and Fe3+ in…

Q: the distinction between metals and nonmetals is really not a clear one. Some elements called…

A: A metalloids are defined as those elements which have intermediate properties between those of…

Q: How many electrons are in the ion?   What is the name of the element?

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Q: 1.) An ion has a mass number of 65, 36 neutrons, and a charge of +1 . Identify the element symbol,…

A: Step : 1             Hey since you have posted multiple questions we will answer first question…

Q: Which of the elements are nonmetals? boron silicon mercury manganese iodine selenium carbon

A: In the question, there are some elements as, boron, silicon, mercury, manganese, iodine, selenium,…