1. Why were the heavier elements not formed the way that the light elements were? 2. How are stars "born"?

Q: Explain how it is possible for one element to have a higher atomic number than another and yet have…

A: Atomic mass of any element is actually its average atomic mass which is calculated by the addition…

Q: 4. What are the main ideas in the nuclear theory of the atom?

A: The main ideas of nuclear theory of an atom has to be given. The atomic model of Rutherford is also…

Q: atom

A: An atom lose or gain electrons in order to attain noble gas configuration (stable configuration)

Q: periodic

A: According to the question, we need to determine what does the letter 'A' represents in this periodic…

Q: Complete ALL boxes in the table below. Number Number Number Number of Chemical name of valence…

A: NOTE: please note according to our policy , we can only answer first three subparts of a question.…

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

A:

Q: 8. What does the atomic number of an element specify?

A: 8. Given term,      Atomic number

Q: 19. What is an ion?

A: Ions constitute the ionic compounds. Sodium chloride is an example of ionic compound which contains…

Q: 16. How many neutrons does the Cl atom have? a) 11 b) 10 c) 7 d) 12

A: The question asked for the number of neutrons in a chlorine atom. To answer this, we need to know…

Q: 55. Which elements are main-group elements?(a) Te(b) K(c) V(d) Re(e) Ag

A: The main- group elements are the elements in the s-block and p-block of the modern periodic table…

Q: Atomic Radius decreases as you move left to right even though there are additional protons ,neutrons…

A: Atomic radius decreases as you move left to right even though there are additional protons, neutrons…

Q: The number of electrons in the highest energy level of nitrogen is one.     two.     three.…

A: Given -> Element -> Nitrogen Electronic configuration of Nitrogen -> 1s2,2s2,2p3

Q: Which statement is correct? A.Electrons, protons, and neutrons have about the same mass.…

A: This question is base on the masses of electrons ,protons and neutrons.

Q: Question 18 Which one of the following has more neutrons than protons? Oxygen-15 O Calcium-38…

A: In an atomNo. of neutrons + No. of protons= Mass number = AAnd no. protons = Atomic number = Z

Q: Identify each of the following as a metal, a nonmetal, or a metalloid.a. oxygen c. germaniumb.…

A: Each of the following has to be identified as a metal, a nonmetal, or a metalloid.

Q: What do you mean by deuterium ? how it is symbolized ?

A: Given term,           Deuterium

Q: Select the INCORRECT statement. Select one: O a. All matter exhibits properties of both particles…

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Q: What element is located in group 1A but is not an alkali metal?

A: The elements that are present in group 1A are called as alkali metals because their hydroxides form…

Q: Choose the element from the list that best fits this description: "This element is in a family of…

A:

Q: 38 If naturally occurring chromium were made up of only 2 isotopes of Chromium-51 and Chromium-53…

A:

Q: Why did J.J. Thompson experiments with cathode ray tubes imply about the mass of an electron…

A:

Q: .What is the difference between the number of electrons in an atom of selenium, Se, and the number…

A: The number of electrons of an atom is equal to the atomic number of that atom. These are the…

Q: 7. In an atom, the charge of the dense fraction is similar to that of alpha particles.

A: The answer is as follows:

Q: H-CC-

A: Given diagram is :  Select only one type of bond in each molecule. If there are multiples of one…

Q: According to Coulomb's Law... O The energy between two oppositely charged particles decreases as the…

A: Coulomb's law states that the force of attraction or repulsion between two charged particles is…

Q: J.J. Thomson was able to measure the charge to mass ratio of an electron. To do this he had to…

A: Discovery of electron is done by J.J Thomson using gas chamber.

Q: Use the models to answer the following question. Model A Model B Which is the correct model and…

A: Given  Model A and Model B diagram is given  To find : Correct statement = ?

Q: Which element is below is not classified as a lanthanide or actinide a. Ceb. Smc. ud. Fre. All…

A: The objective of the question is to identify the element that is not classified as a lanthanide or…

Q: Why are electrons not considered in determining the mass number of an element?

A: Welcome to bartleby !

Q: Explain the structure of an atom in detail, and describe all characteristic properties of each…

A: Atom is surrounded by electrons and have positive charge in center which is called nucleus.   Atom…

Q: what are metalloids?

A: given,Metalloids

Q: 5. Classify each of the following elements as a (an) alkali metal, alkaline earth metal, transition…

A:

Q: 4 The smallest unit of 5. The nucleus is foun

A: the nucleus is found at the centre of the atom

Q: he objective of this homework assignment is to expand your knowledge of the atom beyond the models…

A: The Higgs boson is a fundamental particle in the Standard Model of particle physics. It was first…