A biochemist who is studying the properties of certain sulfur(S)–containing compounds in the body wonders whethertrace amounts of another nonmetallic element might havesimilar behavior. To which element should she turn herattention? (a) F (b) As (c) Se (d) Cr (e) P

Q: A main group element with the valence electron configuration 2s22p3 is in periodic group__________…

A: Given electronic configuration is 2s22p3

Q: Q5: Which group and period aluminium element (13AI) belong * .to? Explain

A:

Q: An element reacts with oxygen to form an oxide which dissolves in dilutehydrochloric acid The oxide…

A: The oxide form of an element in HCl turns red litmus to blue. This gives clear picture that given…

Q: An oxide of phosphorus with Mr = 283.88 contains 43.64% of phosphorus by mass. The MOLECULAR FORMULA…

A: The percent of an element in a compound can be related to the mass of the element in gram. The…

Q: What are the two transition metals that areused in making jewelry and are the group 11 elementswith…

A: To find: The two transition elements present in group 11 elements used in jewelry making with low…

Q: Assuming that the seventh period of the periodictable has 32 members, what should be the…

A: Atomic number is the unique property of the compound. It is basically the no. of protons that are…

Q: Consider an ion with the symbol Y³ formed from a representative element (Y is an unknown element,…

A:

Q: Calculate the packing fraction, mass defect and energy released in the formation of the argon atom.…

A: The packing fraction, mass defect and energy released in the formation of the argon atom are to be…

Q: 1 B,0, + 3 Mg → 3M9O + 2 B 5. (a) How many grams of boron can be obtained from 10.00g of B,0,? (b)…

A: Given balanced equation is as follows. 1B2O3+3Mg→3MgO+2B

Q: Which of the following elements is an halogen?

A: The elements which belong to the 17th group of the modern periodic table are called halogens. The…

Q: Which set of elements below contains, respectively, an alkali metal, a halogen, and a transition…

A: Alkali Metals are Group 1 elements. Halogens are Group 17 elements. Transition metals are d-block…

Q: Classify each of the following elements as a main-group or transition element. Also,specify whether…

A: Given elements: Na, Re, S, I, Kr, Mg, U, Si, B, Al, As, H.

Q: A sample of an oxide of Sn, A weighing 3.014g was heated at a low temperature losing part of its…

A: Suppose, the formula of A is SnxOy Number of mole of Sn present = 2.374118.7=0.02 mole

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: A main group element with the valence electron configuration 4s24p4 is in periodic group ______ .It…

A: The outer electronic configuration of the element is 4s2 4p4. This implies that it has 6 electrons…

Q: Which is true elemental potassium? A. It is a nonmetal B. It is a group II element C. It is a liquid…

A: Potassium is an element present in along with the alkali metals in the first group of periodic…

Q: Silver has two isotopes that are common  in nature. Ag - 107 and  Ag - 109. What  makesthese  two…

A: The solution is given below -

Q: Is strontium a type1 or type2 metal?

A: Firstly understand what is TYPE-1 and TYPE-2 metals:- •TYPE-1 METALS:-Metals whose ions(cations) can…

Q: Discussing this chapter, a classmate says, “Since elementsthat form cations are metals and elements…

A: The given data: The given statement is - Since elements that form cations are metals and elements…

Q: Little is known about the properties of astatine, At, becauseof its rarity and high radioactivity.…

A: Due to Astatine high radioactivity, very less information we are having:     a)  Astatine is solid…

Q: If one gallon of gasoline contains about 2.0 g of lead, how much lead (in kg) is emitted into the…

A: The given data contains, one gallon of gasoline contains 2.0 g of lead.

Q: For each of the following, give the most specific classification according to type of matter:…

A: Compounds are classified in a group according to their nature or physical and chemical properties or…

Q: The 18O:16O abundance ratio in some meteorites is greater than that used to calculate the average…

A: The average atomic mass formula is given as: Average atomic mass=∑i=1n(Atomic mass of an isotope x…

Q: Provided the chemical names for the following compounds with transition metals, provide their…

A:

Q: How can iodine (Z=53) have a higher atomic number yet alower atomic mass than tellurium (Z=52)?

A: lodine (Z=53) has a higher atomic number than tellurium (Z=52). But the atomic mass of iodine is…

Q: Suggest the formula of the acif used to prepare ca3(po4) 2

A:

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: A biochemist who is studying the properties of certain sulfur (S)–containing compounds in the body…

A: Periodic table represents the systematic arrangement of elements in which the properties of these…

Q: What charge would exist on chlorine (#17) after it reacts with hydrogen (#1)?

A: The correct option is(d) i.e partial negative. The electronegativity of H = 2.20  The…

Q: Read the given expression. X number of protons - number of core electrons Which of the following…

A: Answer: option c. X is the effective nuclear charge and it increases across a period.

Q: Which of the following is classified as a metal?

A: based on the option given in the question only option D is correct (Ca is only metal in the given…

Q: 2. Which statement about silicon is false? It is a metalloid. b. It behaves as a semiconductor when…

A: Silicon is p-block element with atomic number 14 and symbol is Si

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: Name each of the following oxides. Assuming that thecompounds are ionic, what charge is associated…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: xplain the characteristics of Group X elements

A: This question is related to alkali metals.

Q: What is the metalloid in Period 3 on the periodic table?

A: Metalloids :-  Elements whose properties are intermediate between those of metals and non metals are…

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

A: d) Melting point increases across a period.  Melting point is the  temperature at which a substance…

Q: 3. What type of elements form ionic bonds with metals?

A:

Q: 1. Which element belongs to Group 4A? ○ calcium ○ carbon ○ selenium ○ chromium 2. Which of the…

A: 1) The element that belongs to Group 4A has to be identified. The given elements are Calcium,…

Q: Which of the following elements would you expect to have properties similar to those of barium (Ba)?…

A: Which of the given element would have a similar properties like Barium (Ba) = ?

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

A: Write reaction between phosphorus and oxygen ?

Q: Strontium has a visible line in its spectrum at 539.8 nm. What is its energy in kJ/mol?

A: λ= 539.8 nm = 5.398x10-7 m1 nm = 1x10-9 mThen use the equationE = hν = hc/λwhere h = Planck's…

Q: Which of the following describes the element I? Choose all that apply. is very reactive as a…

A: I is very reactive non-metal (i is belong to group 17 . in group 17 all metal are non metal) I…

Q: which element is a metal in period 5 of the periodic table

A: Periodic table:In a periodic table elements are arranged by atomic number, electron configuration,…

Q: PROFILE OF LEAD: PLEADE COMMENT IN SOME EXTEND THE PHYSICAL AND CHEMICAL PROPERTIES OF HEAVY METAL…

A: Heavy metals are commonly environmentally stable elements. They possess high specific gravity and…

Q: the atomic number of platinum is 74. what is the effective atomic number of Pt in [PtCl6]^2- ?

A: NOTE: Atomic number of platinum is 78 not 74.Effective atomic number:The sum of the number of…