If an atom has 7 protons, how many electrons does it want to gain in order to fill its valence shell? Group of answer choices a. 2 b. 3 c. 4 d. 8

Q: 2. The atomic number of fluorine is 9. How many electrons does an ion of fluorine have if it is…

A: How many electron in F- ?

Q: Some chlorine atoms have an atomic mass of 37, while others have an atomic mass of 35. What is the…

A: The mass number of an atom is the sum of proton and neutrons present in that atom.  Mass number =…

Q: 1 What is the charge on an atom of beryllium in an ionic compound? B. 2+ A. 1+ C. 3+ D. 4+ 2 What is…

A:

Q: 1. What patterns do you observe about the ions formed by elements in different groups? 2. Based on…

A: To answer: 1. What patterns do you observe about the ions formed by elements in different groups? 2.…

Q: How many electrons are there in the valence shell of Fe+3 ion?

A: Fe (z=26)   outer most electron in iron enter into d orbital so called as d block element

Q: AVhat is the symbol for an ion with: a. 77 protons, 75 electrons, and 116 neutrons b. 117 protons,…

A: a) Ir2+ b) Ts5+

Q: Write the symbols for the ions with the following number of protons and electrons:a. 8 protons, 10…

A: Write the symbols for the ions with the following number of protons and electrons: a. 8 protons, 10…

Q: An atom of Nitrogen-13 has ____ protons and _____ electrons. A) 7, 6 B) 6, 5 C) 13, 7 D) 7,7

A:

Q: Which element is the only transition metal that has a single-letter chemical symbol that is not the…

A: Co-ordination compounds are formed when the metal ion is bonded to the ligand which donates its…

Q: An anion is formed when there are more _______, then there are _______ for that particular element.…

A: We have to an anion is formed when there are more _______, then there are _______ for that…

Q: Give one example (atomic symbol and name) for each of the following. a. a main-group…

A: Hi, since you have posted multiple questions. As per our guidelines, we will answer the very first…

Q: How would the atom modeled below obtain a complete valence shell?

A: Write down the electronic configuration of given atom , Given atom contains 13 electrons so ,…

Q: A scientist needs to find an atom that will work well for her experiment on middle school students.…

A: Answer:- This question is answered by using the simple concept of reactivity and the stability of…

Q: Chlorine has two neutral stable isotopes; Chlorine-35 and Chlorine-37. How many electrons are in…

A: The atoms with the same number of protons but different numbers of neutrons or mass numbers are…

Q: The octet rule indicates that all of the noble gases have eight total electrons B all of the shells…

A: Octet rule indicates that:

Q: a. How many protons does this element have? b. How many neutrons does this element have? c. How many…

A: The atomic number of an atom is the number of protons present in the atom. For a neutral atom, the…

Q: 1.   What is the electrical charge of an electron?  ____________________________________ 2.   What…

A:

Q: How many valence electrons do the atoms of the following elements contain? 4 valence electrons 1. S…

A: the electrons present in the outermost shell or valence shell of the atom is known as valence…

Q: Aluminum has an atomic number of 13 and an atomic mass of 27. Aluminum (with NO charge) has a. 14…

A: Protons: Protons are positively charged subatomic particles found in the nucleus of an atom. The…

Q: Magnesium has 12 protons. How many electrons are in its second energy level? O 1. two O 2. four 3.…

A: Different energy levels in the atom correspond to the different principal quantum number values (n)…

Q: In which molecule would nitrogen’s lone pair be located closest to the nucleus of nitrogen? A.  NH3…

A: It would be of NF3.

Q: 5. Fill in the following table (the first line is competed as an example) Ion Number of Protons…

A:

Q: III. Periodic Properties Answer the following questions about elements and their properties based on…

A: In periodic table the elements are arranged on the increasing atomic number. Due this arrangement…

Q: Determine the number of electrons that the four elements below gain or lose to obtain the nearest…

A: The gaining of electron is called as reduction.  the losing of electron is called as oxidation.

Q: 7) The phosphate ion has a net charge of   A. zero   B. -2   C. +3   D. +2   E. -3

A: The phosphate has the formula of PO43-. Hence it has a net charge of -3 and the correct option is E.

Q: number

A:

Q: Below is a table of elements in a parallel universe: Element Symbol Charge Atomic Mass Scratchium…

A: Element with no charge that is 0 not likely to form a bond with another atom. Element with no charge…

Q: . How many lone pairs does a phosphorus atom have?  2. How many oxygen atoms are present in a mole…

A: The phosphorus atom does not have any lone pair in alone as it contains five electrons in the…

Q: Water contains small amounts of the element fluorine, which helps to strengthen tooth enamel and…

A: Given : Fluorine is added to water in small quantity.

Q: The mass number of an atom is determined by the weight of. O 1. neutrons and protons O 2. neutrons…

A: 16. Given that : We have to identify what determines the mass number of an atom from the following :

Q: A proton has a charge of +1. If a neutral atom loses two electrons, it will have a net charge of…

A: an electron have -1 charge if a neutral atom loses 2 electrons then it means it loses -2 charge so,…

Q: From the following list of elements, select the elements that are likely to form a cation. Choose…

A: Select the correct option as shown in the question---

Q: a.  If an atom of sodium contains 1 valence electron and an ion of sodium contains 8 and has a 1+…

A: a.  If an atom of sodium contains 1 valence electron and an ion of sodium contains 8 and has a 1+…

Q: Write the ion symbol for an atom with the given number of protons and electrons. a. 27 protons and…

A: The objective of the question is to determine the ion symbol for atoms with given numbers of protons…

Q: 6. Draw Bohr atomic models for elements Helium, Magnesium, Oxygen and Krypton

A:

Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.