Which elements are most likely to have properties that are similar to the properties of F?

Q: The first atoms of seaborgium (Sg) were identified in 1974.The longest-lived isotope of Sg has a…

A: (a) we are asked to give the of protons electrons and neutrons in the given atom 266Sg  The number…

Q: What is the atomic weight of element X of an atom X-23 which have an isotopic mass of 23.02amu and…

A: The Atomic Weight of element X ofX23⇒23.02 amu isotopic mass ,X25⇒25.14 amu isotopic mass .

Q: Sketch a modern atomic model of a typicalatom and identify where each type of subatomic…

A: Atomic model is given by many scientists as Bohr's model, Rutherford model etc. Modern atomic model…

Q: How many electrons are in an atom of Te?

A: Tellurium is a 'p' - block element in which the differentiating e- enters into a p - orbital of the…

Q: why the discovery of noble gases was late?

A: The discovery of noble gases was late.

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

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

Q: Why are the chemical properties of all isotopes of the same element identical?

A: Atoms of the same element, having same number of protons and electrons, but differing only in the…

Q: Atoms of the same element that have different atomic masses are called isotopes

A: An isotope is a variation of an element that possesses the same atomic number but a different mass…

Q: The relative atomic mass of antimony is 121,8. Antimony exists as two isotopes - antimony 121 and…

A: Given, The relative atomic mass of antimony is 121.8 and it's two isotopes  antimony 121 and…

Q: List the physical properties of elements?

A: Physical properties of elements are : Physical state Density Boiling point Melting point Specific…

Q: When an atom gives up an electron and acquires a positive charge, it is called a/ an  _____________.

A: Every atom contains valance electrons in its outer shell. When an atom looses and electron from its…

Q: What element has a symbol of K?

A: An atom is the basic and fundamental unit of matter. An atom consists of electron and the nucleus in…

Q: Explain the Properties of Protons ?

A: The properties of protons has to be explained.

Q: What letters are used to designate atomic number and mass number in isotopic notation of atoms?

A: There are different symbols are used to exhibit atomic Number and mass number of atoms. Atomic…

Q: How are the isotopes of an element different from one another?

A: Isotopes are atoms of the same element which are different in mass. That means They have the same…

Q: In five or more sentences, describe the properties of nonmetals.

A:

Q: Which two of these elements would you expect to show the greatest similarity in chemical and…

A: The elements which are expected to show the greatest similarity in chemical and physical properties…

Q: What is the most massive part of an atom? A. Protons B. Nucleus C. Area outside the nucleus D.…

A: We know that an atom contains three subatomic particles - electrons , protons and neutrons.…

Q: Define the term an element?

A:

Q: Suppose a new element is found on an extraterrestrial planet, element J. Element J consists of two…

A:

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: n element consists of 1.40% of an isotope with mass 203.9730 u, 24.10% of an isotope with mass…

A: Given that, Element consists of 1.40% of an isotope with mass 203.9730 u, 24.10% of an isotope with…

Q: What fundamental force is responsible for holding together the subatomic particles of an atomic…

A: There are various physical forces acting all around us. Four fundamental forces are listed below:…

Q: Which of the following elements would have chemical properties similar to Ca   K, Ba, Kr, or Sc

A: Elements from same group have same chemical properties

Q: 9. What observations in the gold foil experiment made Rutherford conclude that atoms are mostly…

A: 9. The answer is option no. (B) Most alpha particles passed through the gold foil undeflected. 10.…

Q: A. Atomic number of Terbium B. Mass number of Carbon C. Element with atomic number 113

A: Given, A. Atomic number of Terbium = ? B. Mass number of Carbon = ? C. Element with atomic number…

Q: Describe Thomson’s model of the atom. How might itaccount for the production of cathode rays?

A: The atomic model proposed by Thomson was the plum-pudding model. According to Thomson's atomic…

Q: atom, for the new element are given in the table. 0.507 1.017 4.108 5.074 6.147 7.903 8.294 To what…

A:

Q: How are elements H, He, Li, Be, and B formed with the concept of atomic number

A: The elements H, He, Li, Be, and B formed with the concept of atomic number have to be given below.

Q: Are two atoms of the same element identical ?

A: Element are pure substance and cannot be break down into other substance by any means that is…

Q: If the heaviest isotope (A) is more abundant and the other isotopes (B & C) were less abundant,…

A: The periodic table's atomic mass is the average weight of all its isotopes. Average atomic mass of…

Q: Calculate the atomic mass of naturally occurring boron if 19.9% of the boron atoms are 510 B and…

A: The atomic mass of naturally occurring boron has to be given,

Q: Which pair of particles has the same number of electrons?

A: Total electrons in a cation = atomic number - total positive charge  Total electrons in an anion =…

Q: element 'X' is

A:

Q: what are metalloids?

A: given,Metalloids

Q: Boron-10 and boron-11 are the naturally occurring isotopes of elemental boron. If boron has an…

A: Boron-10 and boron-11 are the naturally occurring isotopes of elemental boron. If boron has an…

Q: The atomic mass of the imaginary element Doginium is 15.542 amu. Doginium has two isotopes:…

A:

Q: When was the first theory about the character of the atom developed? O a. some 100 years ago O b.…

A: Atomic theory is a scientific theory of the nature of matter, which states that matter is composed…

Q: 17.A hypothetical element X is found to have an atomic mass of 37.45 amu. Element X has 2 isotopes,…

A: Given that mass of X-37 = 37.24   Let x be the mass of the other isotope  Fractional abundance 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: What is the name for an atom with a nonzero charge? a. Hadron b. lon C. Neutrino d. Quark a O b

A: Hadron, neutrino and quark are subatomic particles

Q: Which pair of elements has the most similar properties? (a) Sr and Ba                (b) S and Ar(c)…

A: To determine the pair of elements that has the most similar property. (a) Sr and Ba(b) S and Ar(c) H…

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: Do isotopes have the same chemistry among each other? Do they have the same electron configuration?

A: Isotopes of an element have same number of protons with different number of neutrons in the nucleus.…

Q: The diagram represents an atom of beryllium. K (a) Complete the following statements by writing one…

A: The diagram of beryllium atom given is,

Q: what element might you expect to be most similar to Sc in its chemical behavior? Why?

A: The element given is Sc i.e Scandium.

Q: Which element is your favorite and why?

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