Question 3 An element has the following electron configuration: [Ne] 3s² 3p³. How many core and valence electrons does this element have? 12 core and 3 valence 10 core and 5 valence O 2 core and 13 valence 5 core and 10 valence O 12 core and 5 valence 8 core and 7 valence

Q: predict the charge of each element based on its position on the periodic table P Na S Cl Mg O…

A: Predict the charge of the given ions-

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A: Mass number: The atomic mass of elements depends on the number of protons and neutrons. The total…

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A: The size of the atom or on is the distance between the nucleus and the outer most electrons When an…

Q: 6. Calculate the atomic mass of the element described below (both atoms of the same element). Then…

A: Isotopes are defined as the atoms of same element having same number of protons but different number…

Q: Which sublevel in the second principal quantum number is represented by the following graph?

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Q: Na CI These 2 elements are in the same Period, what Period would it be? 1 18 2

A: Sodium (Na) electronic configurations [ Ne] 3s1 , Last electron is in  3S ,So principal  quantum…

Q: Match the correct isotope pairs: Atom A (5 protons, 5 neutrons, 5 electrons) Atom B (6 protons, 6…

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A: -> There are three subatomic particles : proton , neutron and electron.Two of subatomic particles…

Q: predict the charge of an element based on it's position on the periodic table P  Na S  Cl  Mg…

A:

Q: Complete the table below, using the diagram of an atom shown at right. Properties of subatomic…

A: Protons, neutrons, and electrons are the fundamental building blocks of atoms, the tiny building…

Q: Complete the following table for an isotopically labeled atom or ion: Complete the following table…

A: Given incomplete table is :  Complete the given table ?  Number of protons (p) = Atomic number (Z)…

Q: Which statement is true of the atom with an electron configuration of 1s2 2s2 2p6 3s1? This is the…

A: The electron configuration 1s2 2s2 2p6 3s1 corresponds to the element sodium (Na), which has 11…

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Q: Determine the number of neutrons, protons, and electrons for a bromide ion that has a mass number of…

A: Atomic symbol of bromide ion = Br- Mass number = 78  Number of(protons + neutrons)= mass  Atomic…

Q: lon Practice Set 1. What is an ions an atom that G positic Or 2. Use a periodic table to complete…

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Q: Current modern atomic theory is based on which of the following? Quantum Model Rutherford…

A: Now a day we are using modern atomic theory. This theory consists of current model of the atom…

Q: Answer the following questions. 1. What is the effective nuclear charge for strontium. Calculation:…

A: It is  the attractive positive charge of nuclear protons acting on valence electron.

Q: Question attached

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Q: Match: 1. An atom's mass number mathematically equals 2. The total number of electrons in a(24Cr+³…

A: Here we are required to match the statement in column A and column B.

Q: 31

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Q: Which atoms' highest energy electrons have the greatest effective nuclear charge?   Question 2…

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Q: Which of the following statements accurately describes electrons? Multiple Choice   They are found…

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Q: H = 2.1 Li = 1.0 Na = 1.0 K = 0.8 H-C=O Be = 1.5 H Mg = 1.2 Ca = 1.0 B = 2.0 Al = 1.5 Ga = 1.6 C =…

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Q: What is the element based on this clue: It has 3 shells of e- and 2e- in last shell?

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Q: Determine the number of protons, neutrons, and electrons in the following: O p= 18 n = 22 e = 40 O…

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Q: Incorrect. In each chosen pair, is the atomic mass higher for the first element listed on the…

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A: Atomic number is the number of protons present in an element.

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Q: Parts of an atom worksheet Complete the following table for each atom. Then draw the Bohr-Rutherford…

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Q: What is wrong with this model ?

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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.