See if you can complete the following table using only what is on this page. Hint: Two of the entries are for the same element. Atomic Mass Number Number Element Nuclear Protons Neutrons Electrons Symbol Br Symbol 79- 35 51 23 35 46

Q: The modern periodic law states that elements are arranged according to increasing (atomic…

A: The number of protons present in the nucleus of an atom is known as atomic number.

Q: what the word mean A number written after an element’s symbol in a chemical formula

A: When a molecule is formed by joining two or more atoms together, a chemical formula is shown to show…

Q: element bismuth is in group element oxygen is in group element chromium is in group ubmit Answer and…

A:

Q: What is the mass of one sodium atom ingrams?

A: The objective of this question is to find the mass of one sodium atom in grams. To do this, we need…

Q: Determine the total number of metal in a cube for a metal phosphide which has a phosphorous atom at…

A: We have to determine the total number of metal in a cube for a metal phosphide which has a…

Q: what group number is lanthanide in periodic table?

A: Lanthanides are belongs to f-block elements. These f-block elements are called inner transition…

Q: Name the compound shown below.

A: Rule of IUPAC- 1) Longest chain as parent chain. 2) Numbering start from those side where more prior…

Q: Refer to the periodic table and state the mass for each of the following number of atoms. (a) 1 atom…

A: Refer to the periodic table and state the mass for each of the following numbers of atoms. (a) 1…

Q: Use the References to access important values if needed for this question. The element sodium forms…

A: The atomic number of sodium is 11 nad the sodium atom contains 11 protons and 11 electrons. The…

Q: How was the arrangement of periodic table developed?

A: As the number of known elements increased, their information about the elements starts increasing.…

Q: how many carbon atoms are, hyrdrogen atoms, oxygen atoms, and nitrogen atoms are in this molecule?

A: The molecule given in the question is a hydrocarbon compound which has heteroatoms (O and N).…

Q: The radius of a tungsten atom is 137 pm. How many tungsten atoms would have to be laid side by side…

A: According to the unit conversion, 1 mm is equal to 1×109 pm. The diameter of tungsten is 274 pm.…

Q: The atomic number, which defines the element is always equal to the total number of

A: Every element is made up of atoms . Atoms consists of electrons , protons and neutrons. These are…

Q: a 8.11-g sample of copper contain atoms

A: The objective of this question is to find out the number of atoms in a given mass of copper.

Q: A more accurate way to describe this "sharing" of electrons in a covalent bond is by saying the…

A: Covalent bond is formed by sharing of electrons between two elements

Q: The total number of atoms in NaCI

A: The number of atom of an element in its molecules is known as atomicity. SodiumChloride or NaCl is…

Q: Ions are Group of answer choices A) Electrically stable atoms B) Atoms that gain or lose electrons…

A: Postively or negatively charged atom is called an ion or we can say that ion is an electrically…

Q: what is the total number of atoms in 263 gram sample of Copper?

A: n=mass/molar mass n=number of moles 1 mole cu contains =6.023 ×1023 atoms

Q: How many elelents are on the periodic table?

A: The periodic table consists of 91 metals and 27 non-metals and metalloids, together consisting of…

Q: How many atoms does hydrogen have

A: Calculate no. of  atom in hydrogen=?

Q: What is polyatomic ions list of them definition and example

A: List of the polyatomic ions:

Q: How do I determine the number of atoms for a given element that are in a compound?

A: Some rules should be followed to calculate Number of elements in a compound.

Q: explain how to get the atomic symbol

A: Atomic symbol is way of representation of a particular element that makes easy handling of elements…

Q: Element diagram for carbon

A:

Q: Research the difference between fixed oils and essential oils. How many atoms of carbon does each of…

A: Saponification is the formation of a metallic salt of fatty acid, such a salt is called a Soap. The…

Q: a silver quarter has a mass oif 6.19 grams.It is 13.6 percent copper the remainder is silver.how…

A:

Q: 4) Tin(II) fluoride is used in toothpaste to prevent dental caries. What is the percent by mass of…

A: Answer- Stannous Fluoride, or Tn(II)  Fluoride, is a compound commonly used in toothpastes for the…

Q: How many ions total are found in the compound CsNO3?

A:

Q: atoms

A: it is made of 3 tiny partical  known as electron ,proton and neutron  Neutron  and proton make…

Q: Use the periodic table to find the atomic mass, atomic number, number of protons, and number of…

A: Atomic structure of an atom: According to the atomic structure of an atom it gives information about…

Q: Give the name, empirical formula, and molecular mass ofthe molecule depicted in Figure

A: In the given figure the violet color represents Phosphorous atoms and the red color represents…

Q: How many electrons in a sodium ion? (How many electrons in the ion that sodium makes?)

A: One can give number of an electrons from atomic number and electronic configuration of Na and Na+.

Q: TNT as shown in figure is used as an explosive in con-struction. Calculate the mass of each element…

A: The molecular formula for TNT is C7H5N3O6 . Given mass of TNT = 1 lb = 453.592 gms Molar mass of TNT…

Q: What is the mass of 9 water molecules?

A: Given : Number of water molecules i.e H2O = 9 molecules

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.