the approximate size, in fm, of the Al nucleus? 13

Q: (a) Group 1A positive + The elements in group 1A configuration. an electron (obtain a charge) in…

A: Concept: Group I A  is the alkali metal group. It includes Lithium, sodium, potassium, rubidium,…

Q: -22 A copper atom has a mass of 1.06 x 10 g and a penny has a mass of 2.5 g. Use this information to…

A: Mass of copper atom = 1.06 ×10-22 g Mass of penny = 2.5g We have to find moles of copper atom that…

Q: Which of the following best describes how the atomic number changes when a nucleus captures an…

A: Answer

Q: mass number for the calcium isotope with 22 neutrons

A:

Q: The relative abundances of silicon isotopes in a sample are  Si-28/Si-29 = 0.08069 and  Si-30/Si-29…

A: Absolute amount of the isotope is the amount of that isotope in the particular amount of sample.…

Q: How many nuclei can reasonably bear the charge in each of the following ions? b. „CH2 d. :ZI

A: Resonance is delocalization of electron from one atom to another which are coplaner i.e sp2…

Q: Completely the following sentence or (illustrate the idea): Lithium is very reactive/kind of…

A: Lithium is the first member of first group group, Alkali metal group. It is solid at room…

Q: An atom of atomic number 53 and mass Number 127contains how many neutrons?

A: Atomic number (Z) = 53 Mass number (A) = 127 Number of neutrons (n) = ?

Q: What is a proton ? what is a chemical?

A: A proton is a subatomic particle which is present in the nucleus of an atom along with the neutrons.…

Q: how do I fix the folowing issues identified in this synthesis where the N bonds to the cyclohexane…

A: Certainly! The issues mentioned in the synthesis represent challenges or problems encountered during…

Q: What is the mass of each isotope?

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

Q: The number of neutrons in the nucleus of the isotope 22Na is

A: The number of neutrons

Q: For the Isotope 6731GaA. What is the atomic number?B. What is the mass number?C. What is the number…

A: The general representation of nucleus and the atomic number and mass number of given element is,

Q: A- Determine the mass of nucleons and electron by atomic mass unit?

A: mass of 1  electron = 5.45e-4 amu, mass of proton = 1 amu and mass of neutron = 1.     Now, nucleons…

Q: What are the factors that affect the average atomic mass of a mixture of isotopes?

A:

Q: how many isotopes of bromine exist ?

A: Isotopes:The variants of a chemical element, which have same number of protons and differs in number…

Q: positively . negatively . neutral. electrons . neutrons. central . protons   fill in the blank…

A: An atom is formed from 3 subatomic particles, namely - Proton  Neutron  Electron An atom has these…

Q: What are (i) mass, (ii) charge and (iii) location in the atom of each of the following sub-atomic…

A:

Q: A. Write the Xnotation for each atomic depiction: (a) Z 18e 18p* 20nº (b) 25e 25p* 30n (c) 47e 47p*…

A:

Q: Give the ground-state electron configuration for each of the following elements. (a) Nitrogen (b)…

A: Given,The atoms:(a) Nitrogen:(b) Helium:

Q: An atom with 2 electrons, 2 protons and 4 neutrons has an atomic number of ...

A: Given -> Number of electrons = 2 Number of proton = 2 Number of neutron= 4

Q: Define an element baed upon its composition.

A: We have been asked to define an element based upon its compositions.There are different elements in…

Q: 28. Which of the following descriptions in incorrect? (1)A proton has a positive charge and is…

A: To find: The false statement: (1)A proton has a positive charge and is located in the nucleus (2)A…

Q: Which part of the atom has most of mass ?

A: Most of an atom's mass is in its nucleus.

Q: Research on one element from each of the following groups; IVA, VIA, and VIIA. Discuss how the…

A: Answer - 1.Group 4A. Group 4A (or IVA) of the periodic table includes the nonmetal carbon (C), the…

Q: Atomic number of an element = number of:        2.  Atomic mass of an element = number of    ..…

A: Atomic Number: It is defined as the total number of protons present in an atomAtomic Mass: It is…

Q: Explain how the isotopes of an element are alike and how they are different.

A: An atom is composed of protons, electrons, and neutrons. The protons and neutrons are present in the…

Q: How many protons, neutrons and electrons are present in the following: 40 a) s"B b) 173°CH c) 18°Ar…

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

Q: The atomic mass of rhenium is 186.2. Given that 37.1% of natural rhenium is rhenium-185, what is the…

A: Average atomic mass = ∑i=1n (mass of ith isotope)(% abundance of ith isotope)100 Where "n"…

Q: Protons and neutrons have Mass ww less equal high O Other

A: Please find your solution below : Electrons protons and neutrons are the subatomic particles that…

Q: Nickel is used for.......

A: Atomic number of Ni is 28. It is a transition metal.

Q: "For nitrogen-14 with a charge of 1, the number of protons are type your answer... the number of…

A: Given element is nitrogen with 1 charge.Atomic number= number of protons Mass number = number of…

Q: Explain the relationship between an atoms number of electrons it’s relative stability

A: An atom contain negatively charged electrons and positively charged nucleus.

Q: 2.25. Fill in the missing information about atoms of the four nuclides in the following table.…

A: A neutral species has the same number of protons and electrons, and the number of protons in the…

Q: (a) Define the atomic mass unit and estimate the atomic mass unit respective to C12. [4] (b) Write…

A: a) Atomic Mass Unit (amu): The atomic mass unit (amu) also known as the unified atomic mass unit…

Q: What are ionization energy for atoms : (a) F (b) Ca (c) Ba

A: a)  ionization energy of F = 1681 KJ/mol b)  ionization energy of Ca = 589 KJ./mol

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.