Hydrogen „with figures .

Q: What is the term for the series of elements that include Th–Lr?

A: The symbol Th is for the element Thorium The symbol Lr is for the element Lawrencium

Q: Date Electron Structure 1. Draw the Bohr model for bydrogen witha single clectrn Show the l,2,) ergy…

A: Neil Bohr expounded the hydrogen model in detail. The energy paths or the circular paths around…

Q: why the discovery of noble gases was late?

A: The discovery of noble gases was late.

Q: Why can we say that an atom is mostly empty space?

A: Atoms consists of subatomic particles like electrons , protons and neutrons  Arrangement these…

Q: what is the physical stare of Se? physical appearance of Se? what is the color of Se?

A: 1) Physical state of Se:  Selenium is a chemical element with symbol Se and atomic number 34.…

Q: Derive the atomic mass unit?

A: Atomic mass: It is defined as the number which directs how many times the mass of one atom of an…

Q: Use the notation to represent a tin ion having the same number of electrons as anatom of the isotope…

A: Isotopes: Those species having same number of electron and proton but different number of neutron.…

Q: The elements B, Al, Ca, In and Tl are placed in the same group of the periodic table. Give reason.

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Q: Elemental phosphorus is tetratomic. Why?

A: Phosphorous is a element with large atomic size.

Q: a why alumi W

A: a. Ionization energy increases as a general trend across the left to right of period 3.

Q: Give the three isotopes of hydrogen and their uses

A: Isotopes elements having same atomic number but different mass number

Q: Answer and explain properly Dont provide answer from internet   Q) Mention the conflicting issue…

A: Conflicting issue arose between plum-pudding model and the outcomes of the cathode ray experiment:

Q: A sample of a uranium compound is found to be losingmass gradually. Explain what is happening to the…

A: Uranium is a radioactive element which disintegrates spontaneously.

Q: where does the reactivity of an atom primarily arise from

A: Atoms are made up of neutrons, protons, and electrons. Neutrons are the non charged particles while…

Q: Write the symbol for element and classify it as a metal, nonmetal, or metalloid.tin

A: The elements which lie on the left side or middle of the periodic table are classified as metals.…

Q: Write Postulates of Dalton’s atomic theory.

A: Atoms and molecules are the building blocks of matter. Various experiments performed to find out the…

Q: give some similarities that exist among the elements of the group 1

A: Group 1 in periodic table consists of following elements H Li Na K Rb Cs Fr

Q: We learned about three different models describing a stable atom. In three to five sentences, answer…

A: Rutherford compare his model to solar system model . Planets moves around sun and in the same way…

Q: As pure elements, all of the halogens are diatomic molecular species. Their melting points are: F2,…

A: Astatine is a member of halogen group having no stable isotope.

Q: In the simulation, what was the maximum number of electrons that could be put on the orbit farthest…

A: 18 electron  The M shell can be put 18 electron as we move to higher atomic number

Q: What can u conclude about atoms with the most number of holes? Why?

A: The smallest unit of ordinary matter that makes up a chemical element is an atom. Every solid,…

Q: Search... .ecollege.com/course.html?courseld-15432274&HeplD-2b3e48e6520860bfd5591538a4a5a27b#10001…

A: At STP, one mole of N2 will occupy a volume of 22.4 L. Volume occupied by 2.70 mole N2 is calculated…

Q: number of atom: 31. 0 a of

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Which of the following statements are not true about hydrogen.

A: Hydrogen having atomic number one is the most common element found on earth.

Q: hat was planck's evolution of atomic theory and their models?Explain briefly

A: Atomic theory was heavily influenced by Planck's quantum theory. The discontinuity of the rotation…

Q: On the blank Bohr Models, create a model for Sodium-23 and Sodium-25. When finished, describe the…

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Q: What is AE for the com

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Q: Compare and contrast the contributions of J. J. Thomson, Ernest Rutherford, and Neils Bohr in a Venn…

A: J.J.Thomson proposed a plum-pudding model which states that atoms have an overall neutral charge.…

Q: A fun fact about nitrogen.

A: The fun facts about nitrogen is

Q: If atoms are primarily composed of empty space,explain why you cannot pass your hand through a…

A: Every object and matter is composed of smaller building units called atoms. Atoms are composed of a…

Q: Complete the electron configuration for F.

A: The arrangement of electrons of an atom or molecule in atomic or molecular orbitals is known as…

Q: Select the correct answer. Why was Niels Bohr's atomic model superior to all the earlier models? OA…

A: It is superior beacuse it told that electron could revolve around the orbit without falling into it…

Q: Tha ll ium, a neurotoxin, is the heaviest member of Group 13 of the periodic table and is found most…

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Q: What do you mean by Hydrogen ?

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Q: element belonging to 18the group are called zero group element. why?

A: The elements belong to group 18 have completely filled valence shell. That means, they have 8…

Q: Describe how the de Broglie equation challenged the Bohr model of the atom

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Q: 15. The gas clou mostly hydroge cloud is irradiat produces a red causes the redo A. Nuclei of…

A: The gas clouds in space are mostly hydrogen gas wherever a gas cloud is irradiated by nearby stars,…

Q: As the attractive force of a nucleus on electrons increases, the size of an atom... O Increases O…

A: Solution The atomic radius of atoms typically decreases from left to right across a amount. There ar…

Q: What are the atoms unmoved for Carbon Suboxide-

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Q: active Activity-Energy Levels of a Hydrogen Atom 7 of 9 I Review | Constants | Periodic Table en an…

A: The question is based on the concept of atomic spectra. We have  to identify the transition…

Q: represent the same element?

A: we know,In atom the number of protons and electrons are equal but different neutrons is possible.so…

Q: A neutral atom with 9 protons will have how many electrons?

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Q: Write the electron configuration for Phosphorus?

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Q: Name the two elements whose existence and properties were predicted by Mendeleevthough they did not…

A: Mendeleev gave in his law that chemical and physical properties of elements recur periodically when…

Q: A friend tells you that the “neon” in neon signs is a compound of neon and aluminum. Can your friend…

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Q: Comparison statement about the Lithium and Helium that interactedin terms of why they require…

A: The amount of energy required to remove an electron from an isolated gaseous atom to form an ion is…