Which statement is true of the atom with an electron configuration of 1s2 2s2 2p6 3s1? This is the electron configuration for sodium. This element is in Group 1A. This element is in Period 3. All of these are true.

Q: Osmium, Os, with a density of 22.57 g/cm3 is the densest metal on the periodic table. a) What is the…

A: a) Electron Configuration and Noble Gas Notation of Osmium (Os):The atomic number of osmium (Os) is…

Q: List the atoms in period 1 of the periodic table. List the atoms in period 2.

A: Horizontal rows in the periodic table are called periods. There are 7 periods in the periodic table.…

Q: Which of the following occurs when elements are heated on a Bunsen burner? Group of answer choices…

A: When a element are placed on a bunsen barner following change occurs.

Q: " The electron configuration can also be represented by writing the symbol for the occupied subshell…

A: The electronic configuration can be written using three basic rule 1. Aufbau principle.2. The…

Q: Define Four Groups Around an Atom ?

A: SOLUTION: Step 1: An atom with four groups around it or four pairs of electrons is basically defined…

Q: which of the following statements concerning elements of the same period is correct? They have…

A: Here we have to choose correct option about  elements of the same period-

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…

A: Two or more forms of the same element that contain equal numbers of protons but different numbers of…

Q: 5. Use a periodic table to explain why metals tend to lose electrons and nonmetals tend to gain…

A: By looking at the periodic table we can find, metals lie on the left side of the periodic table and…

Q: What was the evidence Thomson found in order to support the discovery of the electron?

A: The findings of Thomson in order to support the discovery of the electron.

Q: Which model do scientists currently use to explain electrons arrangement or an element  ?…

A: According to the Bohr model, the electrons circulate in the definite path around the nucleus. The…

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?

A:

Q: Which element do you expect to have properties similar to chlorine? Group of answer choices Nitrogen…

A: In periodic table the elements present in the same group have same valence electronic configuration…

Q: location in atom charge mass proton neutron electron

A: Question based upon structure of atom.explain the properties of sub-atomic particles.

Q: An ion has a +3 charge when it has 28 electrons. Which element is it? Show your reasoning.

A: An ion has a +3 charge when it has 28 electrons meaning that its elemental atom must have 31…

Q: Use the given set of statements to identify a specific atom. Write the symbol for the atom,…

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

A: The objective of the question is to complete the given table regarding the parts of an atom.An atom…

Q: How many protons, neutrons and electrons are in the 77Se isotope? What is its electronic…

A: An atom has 3 subatomic particles electron ,proton and neutron

Q: tudent is studying the ways different elements are similar to one another. Diagrams of atoms from…

A: The  element  belong to same group have same number of electron  in outermost shell .

Q: If two electrons were added to the outer shell of gallium (Ga), its electron configuration will be…

A:

Q: Based on Figure 2.13, which element has the lowest ionization energy? Does this agree with a Google…

A: Given that, a curve of ionisation energy and the electron gain enthalpy. Figure 2.13 We have to…

Q: What role did Rutherford's scattering experiment play in our developing understanding of atomic…

A: The Rutherford Model was devised by the New Zealand born physicist Ernest Rutherford to describe an…

Q: You and your classmates have been given an electron configuration and need to identify what it is.…

A: Since, According to Aufbau law,  Electron filled in increasing order of their energy. Thus,

Q: How can we find the number of electrons?

A: we have to determine the number of electrons in different energy levels of the given elements

Q: Why does Flourine has a larger atomic radius than Oxygen when it comes after Oxygen in the period?

A: Given: Fluorine has a greater atomic radius than oxygen even though fluorine comes after oxygen.

Q: On the subject of the element Sulfur :    A)   How many valence electrons does Sulfur have?    B)…

A: The atomic number of sulfur element is 16

Q: Enter the number of electrons in each energy level (shell) for each of the elements. If the energy…

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