Isnt boron just b on the periodic table?

Q: An oxygen atom has eight protons. (a) In the following diagram, sketch in the arrangement of…

A: Bohr proposed a model of the atom as a central nucleus containing protons and neutrons being orbited…

Q: what is the chemical formula for potassium phosphate

A: Potassium phosphate is a common term for salts of potassium and phosphate ions.

Q: Classify each element as a metal, nonmetal, metalloid.a) Antimony b) Strontium c) Phosphorus…

A: Non-metal:Non-metal is an element that mostly absences metallic character.Metalloid:Metalloid is one…

Q: 42. The formulas for the oxides of sodium, magnesium, alumi num, and silicon are, respectively,…

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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: How many protons are there in one molecule of dichlorine heptoxide?

A: The molecular formula of dichlorine heptoxide is Cl2O7. Its structure is shown as follows:

Q: Consider (a) an atom with 20 protons, 20 electrons and 20 neutrons, (b) an atom with 20 protons, 20…

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Q: 63. To what group number does each element belong?(a) oxygen(b) aluminum(c) silicon(d) tin(e)…

A: The modern periodic table is divided into 7 periods and 18 groups(numbered 1-18). The elements in…

Q: question 20 (You will NOT find this element on a normal periodic table. You must look at the…

A: Atomic radius Atomic radius of p-block elements decreases on across a period, as the addition of…

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: A 49.8 g sample of water (H2O) contains 5.57 g of hydrogen. What mass of oxygen is contained within…

A: Solution:- 2H2O -> 2H2 + O2       Given data:- 49.8 g sample of water contains 5.57 g of…

Q: What is the formula for calcium oxide?

A: The compound given is calcium oxide.

Q: 1) How do we know that air is not a single substance? 2) Metals have many similar properties, but…

A: In this review we will examine several basic concepts of matter and materials, from the…

Q: 8 S and S8

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Q: pretend that an atom has 25 protons, 20 electrons, and 30 neutrons. What is that charge?

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Q: What type of ion is Na+?

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Q: Based on the location of the elements magnesium (Mg) and bromine (Br) in the Periodic Table, which…

A: We have to select the correct statement for the compound MgBr2

Q: What is the formula of chromium(VI) oxide?   What is the formula of carbon tetraiodide?

A: We have to predict the formula for the given names

Q: In a reaction That makes table salt from sodium(Na) to chlorine (Cl) atoms, which of the following…

A: Given, In a reaction That makes table salt from sodium(Na) to chlorine (Cl) atoms.

Q: What is atomicity

A: Atomicity is a term which is used to represent the number of atoms present in any molecule or…

Q: +, - nich of the following correctly indicates whether the solid represented by the particulate…

A: Need to examine both positive and negatively charged ions in the given model

Q: Is Phosphorus a cation or anion?

A: Positively charged cations and negatively-charged anions are formed when electrons lose from metal…

Q: What are some characteristic properties of elements to the left of the elements along the…

A: The staircase in the periodic table is a dividing line between the metals and nonmetals.  The…

Q: What is the chemical symbol of the element found in the 4th family and 5th period of the periodic…

A: Fourth family is called carbon family. The element present in fifth period of fourth family is Tin.…

Q: Answer the question below. Use the rubric in the materials for help if needed. Use details to…

A: Before the modern periodic table was set up, many people proposed the structure of periodic table.…

Q: a In which block of the Periodic Table would you find nickel and copper?

A: Atomic number of Nickel = 28 Electronic configuration of Nickel = [Ar] 3d8 4s2 Period Number of…

Q: Part A In the following drawings, red spheres represent cations and blue spheres represent anions.…

A: In the given figure red sphere represents cations and blue spheres represents anions.  In each…

Q: metalloids

A: In the periodic table, major percentage are metals. In all the periodic table most element are…

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: Dmitrri Mendeleev is coined as the father of the periodic table although Lothar Meyer has been using…

A: Periodic table is a tabular representation of elements, where element with similar physical and…

Q: Consider the phosgene (COCI, molecule. What is the central atom? Enter its chemical symbol.

A: →Rule for making lewis dot structure :-1 Calculate total charge :-Valence electrons +(-ve…

Q: Explain why the symbol for the element sulfur and the formula for a molecule of sulfur differ.

A:

Q: Write the full and noble gas configuration for Ag. Full Electron Configuration: Noble Gas…

A: Given  Element = Ag  Full electron Configuration =  ?  Noble gas Configuration    =  ?

Q: Of the elements listed below, which one would be a poor conductor of heat and electricity? a) Mg b)…

A: Which element among the following Mg, CS, Se, Sn & Zn   is poor conductor of heat and…

Q: Examine the statement “No two elements have the same line spectrum.” Explain why this can be used…

A: Every element has a unique line spectrum. This is because the energy absorbed by the electron is…

Q: State one similarity and one difference between the isotopes of tin.

A: Given : Isotopes of Tin To find: One similarity and one difference between the isotopes of tin…