Arrange the elements Na, Si, and S in the order of (a) decreasing atomic radius. (h) increasing first ionization energy.
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Q: what is the atomic number for iron, calcium, potassium, oxygen, nitrogen, and hydrogen?
A: The ATOMIC NUMBER of a chemical element is the number of protons found in the nucleus of every atom…
Q: An ion has 15 protons, 16 neutrons, and 18 electrons. The symbol for the ion is 31P3+. 31P3-.…
A: An atomic number of an element is identified by the number of protons present in its atoms. The…
Q: How many electrons are in the outer shell of each of the following atoms?
A: Since, the question is incomplete, not provided with complete options, so here giving the…
Q: The atomic number on an element tells us the number of
A: An atom is made up of three kinds of subatomic particles called protons, neutrons, and electrons,…
Q: Describe the process of calculating the Lattice Energies?
A: Lattice energies is defined as the energy required to separate a mole of an ionic solid into gaseous…
Q: what are the parts of an atom located? What is the structure? what are these subatomic particles…
A: The structure, parts and subatomic particles of an atom.
Q: How many atoms do we have?
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Q: What does the atomic mass of an element represent?
A: Elements Element is the basic fundamental part of matter which is the basic unit of every matter…
Q: Look up antimony in the periodic table 1Z = 512. How many covalent bonds would you expect it to…
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Q: How many electrons must a nitrogen atom, Z = 7, gain to attain a noble gas configuration?
A: According to the Bohr concept of atomic structure, every atom gain or lose one or more electrons to…
Q: A lithium atom has 3 protons and 4 neutrons. What is itsmass number?
A: The atomic mass number represents the total number of protons and neutrons present in the atom,…
Q: The atomic mass number of an atom is determined by the sum of the number of in the atom. (a) protons…
A: The total number of neutrons and protons in an atomic nucleus is called atomic mass number.
Q: Elements have varying numbers of protons, neutrons, and electrons.True or false?
A: Atom is the smallest particle of an element that is composed of subatomic particles such as,…
Q: Arrange in order of increasing atomic size. (a) the period 2 elements Li, C, and F (b) the group…
A: According to the question, we have to arrange the following period or group elements in order of…
Q: Explain the boiling point of a compound ?
A: The melting point is the temperature when a solid substance is starting to convert into liquid. The…
Q: What happens when ionizing radiation strikes an atom in a chemical compound?
A: Ionising radiation is radiation, travelling as a particle or electromagnetic wave, that carries…
Q: What is the maximum number of electrons in the 1s orbital of an atom?
A: In this question, we have to answer the maximum number of electron found in 1s orbital.
Q: Draw a perfect G-quartet and label all the atoms
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Q: In the accompanying figure, the atomic number refers to the:
A: The given is C (carbon) The atomic number is 6 The mass number is 12
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Q: Which element is likely to lose an electron more easily, Mg or S?
A: Valency of an element is the combining power or combining capacity of the element with other atoms…
Q: Where within an atom are the three types of subatomic particles located?
A: Atom is composed of tiny subatomic particles called protons, neutrons, and electrons.
Q: What is the total number of atoms in the molecule HNO3?
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Q: What is the atomic number of an atom that has 6 protons, 6 neutrons, and 6 electrons?
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Q: There are three different types of spectroscopic analyses which are utilised in atomic spectroscopy.…
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Q: Compute the formal charge (FC) on each atom in the following structures [H2CNH2]+
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Q: What is the approximate atomic mass of an atom with 16 neutrons, 15 protons and 15 electrons?
A: Atomic mass is described as the number of protons and neutrons in an atom.
Q: Name several inorganic compounds.
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Q: what subatomic particle is present in the nucleus of an atom?
A: The subatomic particles are present inside the atom. Each subatomic particle has a unique charge…
Q: What subatomic particle do all Carbon atoms, isotopes and ions have in common?
A: Atoms are the basic building blocks of all elements found on earth. Every atom is made up of a…
Q: what makes Isotopes of an element different from one another?
A: Isotopes have variation in number of neutrons they posses but number of protons and electrons remain…
Q: Which of the following ideas about electrons was suggested by Niels Bohr? *
A: Niels Bohr Proposed a theory for hydrogen atom in 1913.
Q: Define the atomic mass of an atom. What are two things that make up an atom?
A: Atom is the smallest unit of the element. Every element has its unique atom with varying atomic…
Q: What is a proton? A. A negatively charged particle B. A positively charged particle C. An element on…
A:
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Q: How many protons, electrons, and neutrons are present in the following ? Magnesium cation (Mg2+),…
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Q: Write the symbol for an ion that contains 34 protons and 36 electrons.
A: The protons are the positively charged particles that are present inside the nucleus of an atom. The…
Q: [ Ionic cluster , covalent cluster , metallic cluster , hydrogen cluster , van der Waals cluster ]…
A: IONIC CLUSTER: When an ion is formed with the combination of two or more ions or atoms or molecules…
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Q: What is the mass number of an ion with 107 electrons, 157 neutrons, and a +1 charge?
A: Mass number It is defined as total sum of protons and neutrons in an atomic nucleus. The protons…
Arrange the elements Na, Si, and S in the order of
(a) decreasing atomic radius.
(h)
increasing first ionization energy.
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- The H⁺ concentration in an aqueous solution at 25 °C is 4.3 × 10⁻⁶. What is [OH⁻]?Calculate the coulomb energy for the following three nuclei using the semi-empirical mass formula. a) 19F b) 48Tİ c) 63CuSolid iron(II) fluoride (FeF2, Ksp= 2.36 x 10-6) is dissolved in water. If 8.1 x 10-3 mol L-1 of iron(II) ion is found to be in solution. Is the solution saturated, unsaturated, desaturated or supersaturated.
- According to chemist John Dalton, if one mole of nitrogen is combined with three moles of hydrogen to form one mole of ammonia (knowing that nitrogen, with an atomic number of 7, has an atomic mass of 14, and hydrogen, with an atomic number of 1, has an atomic mass of 1), then this compound will have an atomic weight (or molecular mass) of: 14 grams per mole (14 daltons) 17 grams per mole (17 daltons) 20 grams per mole (20 daltons) 22 grams per mole (22 daltons) 43 grams per mole (43 daltons)(i) MnO is basic whereas Mn207 is acidic in nature. Why? (ii) Transition metals form alloys. Why? (iii) Complete the following equation: 2MnO4 + 4KOH + O2 ———>A compound with empirical formula C2H5O was found in a separate experiment to have a molar mass of approximately 90 g. What is the molecular formula of the compound?
- a) Identify the following as element (atomic or molecular), compound or mixture. b) Explain your reasoning and draw a sample of these substances containing 5 particles of that particular material. c) What would be the mass of 5 particles of that particular material? Show your work! H20 N2 C2HSOH Iodine gasIodine has 37 known isotopes. Therefore, the atomic mass has a range of 108-144 amu. Which of the following statements concerning iodine is correct? A) The isotopes of iodine have between 55 and 91 protons. B) An atom of iodine can have between 55 and 91 neutrons. C) The isotopes of iodine will always have the same number of neutrons, but the protons can vary. D) The isotopes of iodine have between 108 and 144 neutrons, but the number of protons will not vary.Look up the valence electron configuration, covalent atomic radius, effective nuclear charge, first ionization energy and Pauling electronegativity in Chapter 8 (tables are attached). Examine the above data and answer the following questions. a) Explain why some of the elements like TI and Pb on the lower left of the p block are metallic. b) Explain why some of the elements like C, Si in the center of the p block form covalent bonds. Explain why these bonds formed by the network of these elements (as studied in Chapter 25) tend to be unreactive. c) Explain why the noble Group 8A elements are highly unreactive gases. d) Explain why some elements like F, CI, Br etc, on the upper right of the p block are highly reactive nonmetals.
- How does the atomic structure or composition of the versions of sodium in question C above differ from a typical sodium atom, with its atomic mass of 23?The atomic emission spectrum for a particular element includes blue-violet light with wavelength 440. nm. Calculate the energy in joules of this light given that E = h c/A, and h = 6.63 x 10-34Js, and c = 3.00 x 10°m/s. (h andc are constants, A is wavelength, convert nm into m) h c E =Beyond the differences in molecular mass, what is different about determining the molarity of a solution containing a salt (e.g. NaCl, MgCl2) versus a covalently linked molecule (e.g. glucose)?