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

Q: Explain the structure of an atom, including its main particles

A:

Q: Is the statement inconsistent with Rutherford’s nuclear theory as it was originally stated? Why? The…

A: In his nuclear theory, Rutherford states that the nucleus of an atom contains most of the mass of…

Q: What makes an atom of one element different from an atom of another element?

A: Every element of the periodic table has different physical and chemical properties. These properties…

Q: Which statement about electrons is true?(a) Electrons attract one another.(b) Electrons are repelled…

A: Molecules are composed of tiny particles called atoms. Atoms are composed of sub-atomic particles…

Q: Which statement is true?(a) For a given element, the size of an isotope with more neutrons is larger…

A: For a given element, atoms having same atomic number with different mass number are known as…

Q: Why the elements of group 13 are called p-block elements?

A: P-block elements are those which which last electron enters in any of three p-orbital subshells.

Q: An atom with which atomic diagram has chemical properties most similar to calcium? a) b) c)

A: Introduction The elements which have a similar number of outermost electrons (or we can also ay…

Q: Identify the two elements that are NOT placed (left and right) according to Dimitri Mendeleev's…

A: Given: The objective is to identify the two elements that are NOT placed according to Dimitri…

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: Sr-90 has [ Select ] neutrons than Y-91

A:

Q: Out of the atomic number, atomic mass number, atomic weight, isotopes which one of these are unique…

A: Atomic number = It is equal to the number of protons present in the nucleus of an atom.Atomic weight…

Q: List the components of an atom

A: An atom is the smallest particle of matter that participates in a chemical reaction other than…

Q: utral radium atom has a mass of 226 (atomic number 88) it would have neutro electrons.

A: The question is based on concept of atomic structure. We have  to calculate correct  number of…

Q: 1. Complete the following table: Symbol # protons # neutrons # electrons Mass Atomic number Number…

A: The atomic number is the number of protons or electrons present in the element. The atomic mass…

Q: An atom of an element contains 66 electrons. Which element is it?

A: The periodic table is the arrangement of elements in the order of increasing atomic number. The…

Q: Fill in the blanks 1. An orbital is the region in an atom where it's more likely (probably) to find…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: How many 3? electrons are found in each of the following elements? nickel, ?= 28 vanadium, ? = 23…

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Q: 11) To calculate the number of neutrons in an atom, you would subtract A) mass number from atomic…

A: Sence, you have asked multiple questions so I will solved in details first question for you with…

Q: Which elements are likely to lose electrons

A: The metal atoms tend to lose electrons and form the cation and the nonmetal tend to electrons and…

Q: Write the elemental symbol for each of the following atoms and calculate the number of neutrons:…

A: No of Proton= No of electron=No of atomic Number (a):- atomic No is 55, no of proton is 55 (b):-…

Q: (a) How many protons are found in one atom of selenium-80? protons (b) How many neutrons are found…

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Q: How many neutrons are in the nucleus of an atom that has an atomic mass of 36 and an atomic number…

A: We are given a atom, lets say X having atomic number 25 and Atomic mass = 36.

Q: a. Explain how atoms of different elements differ from one another.b. Explain how atoms of different…

A: a).

Q: Write the electron configuration for an atom with 13 protons and 14 neutrons.

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Q: Which scientific model can be used to predict the properties of an element

A: The periodic table is the scientific model that can be used to predict the properties of an element…

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: Let’s consider, X3+ where the mass number is 41 and electron number is 20. What would be the neutron…

A: Interpretation - To find the neutron number and write the mass number of two possible isobars for…

Q: Which pair of particles have the same number of electrons  Choice A: F-,Mg2+ Choice B: Ne,Ar…

A: An isoelectronic pair  is a group of ions that all have the same number of electrons.

Q: Explain why the atomic mass of an element is an average mass

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Q: an isotope that has the atomic number 53, atomic mass 127 and a charge of "-1" determine the number…

A: Elements have same atomic number but different mass number is known as Isotopes

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: consider an atom of 63cu. how many protons neutrons and electrons does this atom contain

A: All the element in periodic table, have various number of isotopes. The atomic number of an element…

Q: Describe what would happen to Atomic/Ion A if it lost an electron. What would happen if it lost a…

A: An atom is electrically neutral because the no of protons and the no of electrons are equal.  Atomic…

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: Which of the following factors determines the size of an atom?(a) the volume of the nucleus (b) the…

A: Atomic size can be given as the separation between the nucleus and the valence electrons of an atom.…

Q: Describe the parts of an atom and where they are found within the atom.

A: An atom is a very tiny particle of an element or we can say that atoms are the basic building blocks…

Q: a sample of the element boron with have some atoms with six neutrons and some atoms with 5 neutrons;…

A: Given is a sample of biton atoms, of which some contain 5 neutrons and some contain 6 neutron. We…

Q: What is one way to describe the modern understanding of the location of electrons in an atom

A: Please find your solution below : The location of electrons in an atom can be best defined by the…

Q: the elements with atomic numbers 9,17,35,53 and 85 all are a   noble gases b    halogens c     heavy…

A: Fluorine, chlorine, bromine, iodine, and astatine are the member of the halogen group and all of…

Q: How is atomic mass calculated for elements?

A: The atomic mass is a weighted average of all of the isotopes of that element, in which the mass of…

Q: Is the statement consistent with Rutherford’s nuclear theory as it was originally stated? Why? The…

A: Atom is considered as the smallest particle of matter. There are various models for describing the…

Q: The number of neutrons in an atom determines the type of element it is true or false

A: Given True/False  Statement:-

Q: What best describes electrons

A:

Q: Use the periodic table to write the condensed electron configuration for In [atomic no. =49].

A: The electron configuration of an atom represented in form of its nearest noble-gas element of lower…

Q: Which element is radioactive semimetal? A) Tellurium B)polonium C)Antimony D)Francium

A: Semimetal : metalloids are known as semimetals  A) Tellurium : symbol : Te   Atomic number :  52. It…

Q: What is a metallic character?

A: Metallic character indicates the reactivity of a metal. Metals tend to lose electrons in chemical…

Q: 2. An element that has 9 orbitals 5 fully filled, 2 single electrons and 1 empty orbital (a) What is…

A: f) Mg is a metal and can easily lose two electrons. It have properties similar to group 2 elements…

Q: Which element is your favorite and why?

A: Answer My favourite element in a Periodic Table is        Carbon