What is the element based on this clue: It has 3 shells of e- and 2e- in last shell?

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: Which subatomic particle has a negative (-1) charge?

A: There are total 3 sub-atomic particles which are present in any atom.

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: 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: 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: Which element is a row 4 noble gas? (a) Ne (b) Br (c) Zr (d) Kr

A: The rows or periods of a periodic table are made up of elements with the same number of electron…

Q: 34. The nucleus of an atom contains 56 neutrons. The atom contains 43 electrons. What element is it…

A:

Q: An element 'A' contains 4 protons, 4 electrons and 5 neutrons. it is + 1. It becomes when it has 4…

A: For a neutral atom, the number of electrons or protons is equal to its atomic number. The mass…

Q: Explain the Nuclear Model of the Atom?

A: Rutherford's atomic model is also known as the nuclear model of an atom.

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: 23U → 23Th + He 2. For each element, what do the top (superscripted) and the bottom (subscripted)…

A: Introduction: In the above reaction nucleus of uranium undergoes alpha decay ,in this nuclear change…

Q: Given the only naturally occurring isotope of sodium is Na-23, determine its mass from the periodic…

A: The atomic number of sodium (Na) is 11.

Q: A nitrogen atom has 7 protons, and the most common isotope of nitrogen has 7 neutrons. A radioactive…

A:

Q: 1. Give the name and element symbol of the element described by the following a. A noble gas in…

A:

Q: Which of the following is False?a. An element is defined by its atomic number.b. Ninety-two elements…

A:

Q: The element with atomic number 38, strontium (Sr), can be found in what period of the periodic…

A: The periodic table is a tabular display of chemical elements arranged according to their atomic…

Q: Which particle diagram represents a mixture of three substances? * 1 point Key O = an atom of one…

A: option 2  here in this image , there are 3 different types of molecules 1) two atoms of one element…

Q: Q5. Which element is a halogen?(a) Ne (b) O (c) Ca (d) I

A: Halogen belongs to 17 groups of the periodic table. Halogens are gaseous in nature. Halogens are…

Q: 2.34 Describe Thomson's model of the atom. How might it ac- count for the production of cathode…

A: Thomson's model of atom is also known as plum pudding model. According to plum pudding model, atom…

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: Protons, neutrons and electrons each have a mass of 1 amu. a. True b. False

A: The mass of an electron is 0.000549 amu. The mass of proton and neutron is approximately 1 amu.…

Q: Prompt:  Jeremy was completing his homework.  His father took a look at his homework and asked him…

A:

Q: RE: What does the atomic number of an element represent? The atomic number of an element represents…

A: ★ What does the atomic number of an element represent ?  ★ The atomic number of an element…

Q: A carbon-12 atom has a mass of 12.00000 amu. The mass of a proton is 1.00728 amu, and the mass of a…

A:

Q: Which of the following refer to elements in D-block? O Inner transition metals O Metalloids O…

A: A transition metal can be defined as any element in the periodic table, which includes groups 3 to…

Q: Electron- Proton- Atomic number- Atomic mass- Neutron- Nucleus- C. Isotopes or Different Elements?

A: A typical atom is made up of subatomic particles that include electrons, protons, and neutrons.…

Q: What will be the charge of an atom that has gained 3 electrons? Group of answer choices +3 -3 -1 0

A: There are 2 types of ions : 1. Cation 2.Anion   When an atom gains an electron , the net charge on…

Q: what group in the periodic table would an element with atomic number 112 belong?

A: • We need to determine the group in the periodic table would an element with atomic number 112…

Q: Which element do you expect to have properties similar to chlorine? Group of answer choices Nitrogen…

A: In periodic table the elements present in the same group have same valence electronic configuration…

Q: An element 'A' contains 4 protons, 4 electrons and 5 neutrons. it is + . It becomes when it has 4…

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: 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: 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: Find the iostope data for 14/7 N Include the datat for the atomic number, Mass Number, Protons,…

A: Atomic number is equal to no of proton and no of electron…

Q: Does any element with ZS 92 match the description? If you checked yes, give the symbol of an element…

A: Periodic table is the arrangement of elements in a systematic way based on their physical and…

Q: What will be the charge of an atom that has lost 2 electrons? Group of answer choices -1 +2 0 -2

A: The correct option is as follows:

Q: 1. A) Define atom. B) Define mass number, A. C) Define atomic number, Z.

A: We’ll answer the first three subparts. Please submit a new question to get the answer of other two…

Q: Which of the following is the most important factor in determining an element's place in the…

A: Answer: The number of Protons(Atomic Number)

Q: Which element has an atomic number of 30?

A: We can find the name and position of this element by studying the periodic table of elements.

Q: See if you can complete the following table using only what is on this page. ( Fill in th blanks )…

A: All the elements in chemistry are known by its symbol popularly known as element symbol . Each…

Q: An element 'A' contains 4 protons, 4 electrons and 5 neutrons. it is It becomes • when it has 4…

A: The question is based on the concept of atomic structure. by looking at proton,  neutron &…

Q: See if you can complete the following table using only what is on this page. Hint: Two of the…

A: An atom is composed of protons, electrons, and neutrons. The number of protons will be equal to the…

Q: Which of the following statements regarding atomic Br and Cl is FALSE?

A:

Q: Atom A has a larger atomic mass than atom B. Does this mean that atom A also has a larger atomic…

A: The total number of protons present in its nucleus is the atomic mass of an atom and the sum of…

Q: The actual mass of a 17Cl atom is 36.9659 amu. Calculate the mass deficiency (amu/atom) for a 17C…

A: We have to calculate the mass deficiency of 1737Cl

Q: Question 19 In general, the size of an atom increases as you go from in any column and in any row.…

A:

Q: An element 'A' contains 4 protons, 4 electrons and 5 neutrons. it is •. It becomes • when it has 4…

A:

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 is the relationship between an isotope’s abundance in nature and an element’s atomic mass…

A: Isotopes are atoms of same elements which have same atomic number but different mass number.

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.