How many occupied sublevels are in an atom of carbon in the ground state? a) 5 b) 6 20. c) 3 d) 4 21. Which atom has a mass of approximately two atomic mass units? a) lH b) 2H 1 c) 3He 2 d) 4He 2 What is the total number of neutrons in an atom of 39K? 19 22. a) 19 b) 20 c) 39 a) 58 Which is the correct electron dot symbol for a boron atom in the ground state? 23. a) B° b) c) B d)

Q: 7. Identify for an atom of °Be: element name: Z, atomic number = A, mass number number of neutrons =…

A: Solving only first question in accordance with the guidelines.

Q: Which particle will have a charge of 1+? Protons Neutrons Electrons 1 11 12 10 1 2 3 15 16 15 4 20…

A:

Q: What is the calcium isatope with 20 nevtrons? 才乙

A: The atomic number of calcium is 20 (Number of protons). The symbol of the calcium atom is Ca. The…

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A: Rutherford had the gold foil experiment where he bombarded alpha particles on a thin sheet of gold…

Q: 8. Identify for an atom of 32s : element name: Z, atomic number = A, mass number = number of…

A:

Q: Emitting an electron alters the mass number of the parent element. O True O False

A: The question is based on atomic structure. There are several subatomic particles exists like…

Q: 4. The radioactive element 217At is a member of the e. series ... a. 4n b. 4n+1 c. 4n +2 d. 4n +3 e.…

A: Heavy atomic nuclei are unstable and decay through emitting a sequence of alpha and beta particles.…

Q: Complete each ionization equation. Express your answer as a particle or a chemical formula. 1)…

A: Magnesium loses two electrons and forms magnesium ion. Barium loses two electrons and forms barium…

Q: 44. Elements belonging to the same period have * a. The same number of electrons b. The same number…

A:

Q: What is the most complete list of the particle(s) that are located within the nucleus of an atom? A.…

A:

Q: The artificial element 114 (flervium) was created in in Russia in 1998. It has an atomic number of…

A: The flervium element has an atomic number of 114, its electronic configuration will be : Flervium…

Q: A sample containing 1.00X 10 stored for 135 day s will remain at the end of the storag e period of…

A: Reaction in which rate is linearly depend upon one reactant is known as first order reaction.

Q: Only two isotopes of Sb (antimony, Z=51) are stable. Pick the most likely stable isotope from the…

A:

Q: All of the following are true of a neutron EXCEPT Group of answer choices A, negatively charged B,…

A: Neutrons are neutrally charged. So the answer is: Option A. negatively charged

Q: A bromine atom has an atomic number of 35 and an atomic mass of 80. What is the structure of this…

A:

Q: The nucleus of an atom contains protons and neutrons Select one: O True O False

A: Matter is made of the basic units called atoms. It is in turn made of several sub-atomic particles…

Q: The mass of a cesium (Cs, atomic number 55) atom is 2.21×10−25 kg, and its radius is R = 2.65×10−10…

A: An atom can be considered as the smallest unit of any matter. An atom is composed of certain…

Q: 16 32.06 Identify the number of neutrons in one atom of sulfur with an atomic mass number of 34 amu.…

A: The mass number is the sum of number of Protons and number of Neutrons present in the nucleus of an…

Q: A naturally occurring sample of an element contains only twoisotopes. The first isotope has a mass…

A: % of first isotope = 60.11 % Mass of first isotope = 68.9255 amu Mass of second isotope = 70.9247…

Q: Identify the particle that must receive 2 electrons to acquire a charge of +1.   Question 42…

A: Fe2+ + 2e-  → Fe K cannot receive electrons. O2- cannot receive electrons. Al3+  + 2e-    →  Al+1…

Q: The complete symbol of an atom with atomic number 20, mass number 42 is? Select one: до Са20 а. 42…

A: Atomic number 20 means the element have 20 proton and mass number 42 means total proton ans neutron…

Q: 17. Which one of the following statements is true for an isotope of a particular element? O a…

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

Q: 20 21 23 24 :0 F1 2 26 27 2 F2 14/ Select all answers that show the atoms or ions that are…

A:

Q: Find the atomic weight Isotope Atomic mass (u) Natural Abundance (%) Li-6 6.02 7.5 Li-7 7.02 92.5

A: Calculation of average masse of lithium:

Q: A naturally occurring sample of an element contains only two isotopes. The first isotope has a mass…

A: Given:-  Mass of first isotope = 68.9255amu  Natural abundance = 60.11%  Mass of second isotope =…

Q: Identify for an atom of 32S: element name: _____________ Z, atomic number = ____ A, mass number =…

A:

Q: How do different isotopes of nitrogen behave similarly or differently from each other

A: There are three isotopes of nitrogen, which are nitrogen-13, nitrogen-14, and nitrogen-15. Isotopes…

Q: The maximum number of electrons that can be found in a 3p sublevel is:   a. 2   b. 3   c. 6   d.…

A: Given,  The maximum number of electrons that can be found in a 3p sublevel is:

Q: I need help with numbers 26,28, and 30 Please

A: Dear student, we answer one question in one post. So, we are providing answer for Q 26. Please…

Q: Select all that apply. For each pair of isotopes listed, predict which one is less stable. (a) Li Li…

A:

Q: The major portion of an atom’s mass consists of:a. neutrons and protons.b. electrons and protons.c.…

A: Mass proton = 1.67 x 10-27 kg Mass of neutron = 1.67 x 10-23 kg Mass of electron = 9.1 x 10-31 kg

Q: An atom with atomic number 7 and a mass number of 14 is identical to an atom with atomic number of 6…

A:

Q: Click "atomic mass" on the balance. This reading reports the mass of the particle in atomic mass…

A: C-12 has mass of  12 amu C-13 has mass of 13 amu

Q: Use the information supplied in the table to fill in the remaining blanks in each row. Mass Number…

A:

Q: 3. Atoms are the smallest unit of an element. They're made up of a nuclei composed of 5. Elements…

A: 2) periodic table elements are categorised by their atomic number  3) nuclei have proton and neutron…

Q: (a) Identify the elements with the following atomic numbers: Atomic Number Element Symbol 22 18 33…

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Q: How many p electrons are there in an atom of rubidium? Select one: а. 9 b. 6 С. 12 d. 24 е. 18

A: The question is based on the concept of atomic structure. We have to write number of electrons…

Q: der G Genetic drift-Wikip.. A Algebra Fouhdatio. What belongs in place of the question mark? Isotope…

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Q: MCQ 35: Protons (p') and neutrons (n") constitut A. nucleus B. nucleon C. orbital D. diameter

A: The question is based on the concept of atomic structure. we are talking about subatomic particles…

Q: MCQ 34: The major part of an atom is A. electric field B. space C. nucleus D. orbital

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: Fill in the chart below: Particle Charge Location Relative Size proton neutron electron

A:

Q: Atomic charge Electron number Symbol Mass Proton Neutron number number number number ww ww 16 127 53…

A: Symbol of element is given  Mass number ,Atomic Number ,Proton number ,electron  Number , Neutron…

Q: How many electrons are there in an atom with an atomic number of 45 and a mass number of 95

A: Given :-  atomic number of an atom = 45  mass number = 95  To calculate :-  number of electrons in…

Q: 11. Find the number neutrons in a neutral atom of chlorine of mass number equal to 35 and atomic…

A: The atomic number of chlorine = 17 The mass number of chlorine = 35

Q: Neutrons move round the nucleus of an atom in definite paths called orbits. Select one: O True O…

A:

Q: Alpha emissions from Po-210 are used in paper manufacturing to reduce static electricity. This is…

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Q: Fill in the blanks word .The electron move around the nucleus in an __________

A: The electron move around the nucleus in an __________

Q: What is the mass of an electron?a) 1.67x10-24g b) 1.67x10-24 X (1/1837) c) 9.11 x10-28Kg d) 1.67…

A: Electron is a subatomic particle.