5. Calcium plays several critical roles in the functioning of human cells. However, this form of calcium is the ion made with 20 protons and 18 electrons. Therefore the ion would be...

Q: 3. Among the following.... is an example of polyatomic ions. a) NH4NO3 b) KBr c) AgCl d) NaCl

A:

Q: On another planet, the isotopes of titanium have the given natural abundances. Abundance Mass (u)…

A:

Q: A certain compound is made up of three chlorine atoms, one phosphorus atom, and one oxygen atom.…

A: Given : The compound has  1) 1 oxygen atom i.e 1 O 2) 3 chlorine atoms i.e 3 Cl 3) 1 phosphorous…

Q: 5. In a chemical formula, which element is listed first?

A: In a chemical formula, which element has to be listed first has to be given.

Q: The charge an a cation is... * O negative O positive neutral

A: The answers to these questions are as follows:

Q: 77. Determine the number of protons and electrons in each ion. (a) Na+ (b) Ва?+ (c) O²- (d) Co³+

A: An atom consists of the nucleus at its center, and electrons revolve around the nucleus. The nucleus…

Q: Describe the general structure of an atom and its isotopes.

A: Atom is the basic unit of matter it consists of a heavy positive mass at its center called the…

Q: 57. Which elements are alkaline earth metals?(a) sodium(b) aluminum(c) calcium(d) barium(e) lithium

A: The elements in the tabular form when arranged on the property of the increasing atomic number order…

Q: 8 S and S8

A:

Q: Briefly explain (i) Thompson Experiment OR (ii) Rutherford Experiment emphasizing the discovery(ies)…

A: E. Rutherford discovered protons which are positively charged sub-atomic particles. J. J. Thompson…

Q: Which of the following elements would be classified as a nonmetal? a.) silicon  b.) francium c.)…

A:

Q: What are allotropes? Give an example. How are allotropesdifferent from isotopes?

A: Given term,        Allotropes and isotopes

Q: What is a proton ? what is a chemical?

A: A proton is a subatomic particle which is present in the nucleus of an atom along with the neutrons.…

Q: 6. What is electrical charge?

A: The definition of electric charge has to be given,

Q: In a neutral atom the number of protons equals

A:

Q: On another planet, the isotopes of titanium have the given natural abundances. Isotope Abundance…

A:

Q: Which of the following is the most important factor in determining the chemical properties of an…

A: Atoms consists of protons, electrons and neutrons

Q: Which atom(s) are isotopes? Explain your answer.

A: Isotopes are the types of any element that consists of different numbers of Neutron and similar…

Q: On another planet, the isotopes of titanium have the given natural abundances. Isotope Abundance…

A: Titanium is an element which has symbol Ti and atomic number 22. Its atomic weight is 47.867 amu. It…

Q: positively . negatively . neutral. electrons . neutrons. central . protons   fill in the blank…

A: An atom is formed from 3 subatomic particles, namely - Proton  Neutron  Electron An atom has these…

Q: 13. .... ...The mass of the Avogadro constant of atoms, g/mol. normally, this is the average number…

A: We are to discuss that what the entity is known as, defined by the mass of avagadro constants of…

Q: The polyatomic ion among the following is ……………………..   a.   CN-   b.

A: Those ions which have two or more atom in ion like SO42- , PO43- , CN-

Q: Isotopes are… (answer)

A: Isotope- Isotopes are  elements that all have the same number of protons but different numbers of…

Q: a certain compound is made up of 2 chlorine atoms, one carbon atom, and one oxygen atom. What is the…

A: A chemical formula is defined as the composition of elements present in the compound in a fixed…

Q: On another planet, the isotopes of titanium have the given natural abundances. Abundance Mass (u)…

A: Given :  Isotope Abundance Mass (u) 46Ti 78.900 % 45.95263 48Ti 13.800 % 47.94795 50Ti…

Q: The nucleon number of an isotope of element x is 64.. the isotope has 34 neutrons. What the number…

A: In this question, we want to determine the number of protons in x isotope.  You can see details…

Q: On another planet, the isotopes of titanium have the given natural abundances. Abundance Mass (u)…

A:

Q: "For nitrogen-14 with a charge of 1, the number of protons are type your answer... the number of…

A: Given element is nitrogen with 1 charge.Atomic number= number of protons Mass number = number of…

Q: label No. of orbitals Example 2 2s 1 (a) 3d (b) 4 7

A:

Q: to complete a dot diagram for an ion ... Anions...  A would not change its number of electrons  B…

A: Octet rule : The rule states that the atom with eight valence electrons is most stable. Hence, every…

Q: Consider the elements below: 1. Fluorine 2. Hydrogen ... 3. Iodine 4. Helium ...…

A: The objective of the question is to identify which of the given elements have allotropes and which…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.