Elemental boron is composed of 2 isotopes, boron-10 and boron-11  (A) how many  protons and neutrons are found in these two isotopes of boron ? (B) write the correct isotopic notation for eachof these isotopes of boron? (C) calculate the mass percent of protons in the nucleus of each of these isotopes

Q: 4. When writing a complete atomic symbol, there are four numbers used – in the upper-left,…

A: The atomic symbol describes an atom completely.

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: Antimony has many uses, for example, in infrared devicesand as part of an alloy in lead storage…

A: Isotope with mass 120.904 and 122.904 is 904 Sb51  and 122.904Sb51. The total atomic mass of Sb is…

Q: Chlorine is a halogen (Table 2.3). Locate this element in the periodic table.(a) What is its…

A: Chlorine is a halogen. Chlorine is the second halogen in the periodic table. It lies before the…

Q: 2.105 For the noble gases (the Group 8A elements) ¿He, 10Ne, 18 Ar, Kr, and Xe, (a) determine the…

A: The atomic number defined as the number of electrons or number of protons present in a neutral atom.…

Q: Q2. Which statement best summarizes the nuclear model of the atom that emerged from Rutherford’s…

A: In order to find out the arrangement of e- and protons in atoms, Rutherford conducted a series of…

Q: (2.60 Describe the type and nature of the bonding that occurs b tween reactive metals and nonmetals.…

A: 60) The type and nature of the bonding which occurs between reactive metals and nonmetals has to be…

Q: In each case, calculate the appropriate ratio to show that the information given is consistent with…

A: Given information, (a) Both ammonia (NH3) and hydrazine (N2H4) are composed of nitrogen and…

Q: When writing a complete atomic symbol, there are four numbers used – in the upper-left, upper-right,…

A: In this question, we have to answer that When writing a complete atomic symbol, there are four…

Q: Which of the following facts allows you to determine that atom A and atom B are isotopes of the same…

A: If atom 'A' and 'B'  is an isotope then their mass number should be same. Isotopes are the same…

Q: (1) and (2) have roughly the same mass. (1) = neutrons, (2) = atoms. O (1) = electrons, (2) =…

A:

Q: 2.25 Write the appropriate symbol for each of the following isotopes: (a) Z = 74, A = 186; (b) Z =…

A: The appropriate symbol for given isotopes has to be written.

Q: 69 2.47 Gallium has two naturally occurring isotopes, Ga (isotopic mass = 68.9256 amu, abundance…

A:

Q: Chromium reacts with oxygen to form threedifferent compounds, X,Yand Z. It was found that, for every…

A:

Q: hich of the following applies to the electron? (a) Charge = -1; (b) Mass = 1 amu; (c) Charge = 0;…

A: Particles that are smaller than atoms and that constitute the atom are called subatomic particle.…

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: 5. Sodium azide rapidly decomposes according to the reaction 2 NaN3 (s) required to form 11.300 g of…

A:

Q: Use the periodic table to give the name and symbol for each of the following elements: (a) the…

A: In a period the electrons are filled in the same shell and in a group, the electrons are filled in…

Q: 1.)An atom of sodium contains 11 electrons, 11 protons, and 12 neutrons. What is the atomic number…

A:

Q: Choose the correct answer. The difference between the massnumber of an isotope and its atomic number…

A: The mass number of an isotope is the sum of the number of protons present in an atom and the number…

Q: Enter the appropriate symbol for an isotope of phosphorus-32 corresponding to the isotope notation…

A: The term isotopes can be defined as the variants of a given chemical element that differ in neutron…

Q: From the information that follows, write the isotopic notation for each atom, then decide which one…

A: We have been given isotopic notations for each atom and we have been asked to decide which one is…

Atomic Structure

The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.

Shape of the D Orbital

Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.