410 186 412Z X 410 183 Y 186 Which two are isotopes? A. X and Y B. X and R C. Y and R D. Z and R E. X and Z 412 185 R

Q: How many protons, neutrons, and electrons are there in a neutral atom of 199F? #neutrons # electrons…

A: Given symbol of the atom = 919FNumber of protons = ?Number of neutrons = ?Number of electrons = ?

Q: Which pair represents a set of isotopes? O A. calcium-48 and titanium-48 O B. 74se and 82se O C.…

A: Isotopes : Isotopes are the atoms of same  element with same atomic number but different number of…

Q: Which best describes isotopes? A. Same number of neutrons, different number of electrons B. Same…

A: atoms of the same element have the same number of protons, but some may have different numbers of…

Q: 3. What mass of Al contains the same number of atoms as 3.0 g Pb7 a. 23 g b.0.014 g C. 3.0g d. 0.39…

A: 3. mass of Pb = 3.0 g molar mass of Pb = 207.2 g/mol moles of Pb = 3.0 g / 207.2 g/mol…

Q: is not used to make Portland Cement a Calcareous Rocks b. Argillaceous Rocks c. Siliceous d. Sands…

A: 1.  B option is correct. CO2 Carbon dioxide is emitted as a by-product of clinker production, an…

Q: 9. Element X has two naturally occurring isotopes; 10x with a percent abundance of 85% and 12x with…

A: Average atomic mass: The average atomic mass of an element is the sum of the masses of its isotopes,…

Q: There are electrons and +2 neutrons in the ion of Cd Atomic number: 48 Mass number : 112 O A. 46, 48…

A: Given ion,    Cd2+ ion    Mass number = 112    Atomic number = 48

Q: How many protons (p), neutrons (n), and electrons (e) are in one atom of  23  12   Mg  ? (*23 is the…

A: Mg is an Alkaline Earth Metal (Group 2) element. Atomic No. of Mg = 12 Mass No. of Mg = 23

Q: For each atom described, list the number of electrons, protons and neutrons. a. Neutral Ne 1910 b.…

A:

Q: Write isotopic symbols in the form 2X for each isotope. a. the copper isotope with 34 neutrons b.…

A: Isotopic Symbol: It gives us information about the number of protons, neutrons, and mass number of a…

Q: An isotope of iron has a positive charge of 2 and 24 neutrons. How many electrons does it have? a.…

A: They have the same atomic number and position in the periodic table, but differ in nucleon numbers…

Q: An element has three naturally occurring isotopes with the following masses and abundances (in…

A:

Q: 9. Which isotope is used in many smoke detectors for homes and businesses to measure levels of toxic…

A:

Q: Chlorine has two neutral stable isotopes; Chlorine-35 and Chlorine-37. How many electrons are in…

A: The atoms with the same number of protons but different numbers of neutrons or mass numbers are…

Q: 13. Calculate the percentage of bromine atoms that have a mass of 78.9183 amu and the percentage…

A:

Q: Magnesium has an atomic number of 12. Which of the following statements is true of a neutral…

A: Correct answer is (a.) It has 12 protons, 12 electrons, and 12 neutrons. Atomic number (Z) = number…

Q: 4. Which is a pair of isotopes? 238.. a. b. C. • d. 238 U and 92 59 27 Co and 27 Al 1341 and 39. K…

A: Which of the following is a pair of isotopes?

Q: 1. Which of the following element has an average atomic mass that is about ten times that of…

A: The average atomic mass of an element is the sum all the masses of its isotopes existing in nature ,…

Q: In an alternate universe there are only two naturally occurring isotopes of iron. 58Fe //mel Bey Pun…

A:

Q: 13. Which of the following are isotopes? a. P3- and Ar b. 1251 and 127| c. O and O2- d. Na* and K*…

A: b) 125I and 127I

Q: 1. The atomic number of lithium is 3. How many neutrons does an atom of lithium have if it is…

A: Element is represented by symbol AX Where A = mass number

Q: Neon has three different isotopes.  90.51% of neon atoms have a mass of 19.992 amu.  0.27% of neon…

A:

Q: Rubidium has two naturally occurring isotopes, from the following data calculate the value of X?…

A:

Q: D Suppose that fictional element X has an average atomic mass of 74.029 u. Element X has two…

A: Given -> Average atomic mass = 74.029 u Isotope -1 has mass(m1) = 72.021 u Isotope -1 has…

Q: Calculate the mass (in grams) of a tungsten atom. A. 1.107 x 10 - 26 B. 1.661 x 10 - 24 g C. 3.054 x…

A: Molar mass of tungsten = 183.84g/mol

Q: 5. A lithium atom contains 3 protons, 4 neutrons and 3 electrons. What would be formed if one proton…

A: An atom consist of 3 subatomic particles

Q: According to the periodic table, the neutral atom of what clement has 4 protons, 5 neutrons, and 4…

A: Answer

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: a. b. C. d. 18. How many electrons, protons, and neutrons are in each of the following? c. Cobalt-58…

A:

Q: 5. Which of the following particles has the smallest mass? A. Electron B. Proton C. Neutron D.…

A: Identify the smallest particles among the given paticles ?

Q: Strontium(Sr, atomic number 38, average atomic mass= 87.62) naturally exists as 4 stable isotopes…

A: Since we know that the stability of isotopes are depends upon the percentage of abundance . If the…

Q: An isotope of lead (Pb) has 122 neutrons. The mass number of this isotope is a. 204 b. 82 c. 288…

A: The solution is as follows :

Q: 4. An atom is electrically neutral because the A. number of protons equals the number of electrons…

A: An atom consists of 2 sub- atomic particles : 1. Electrons : Electrons are negatively charged…

Q: A certain element X has four isotopes. • 4.350% of X has a mass of 49.94605 amu. • 83.79% of X has a…

A: From part B, Average atomic mass of element X = 52 amu Mass of electron = 9.1× 10-31 kg mass of an…

Q: Strontium (Sr, atomic number 38, average atomic mass = 87.62) naturally exists as 4 stable isotopes…

A: Strontium-88 is the most abundant. Hence option C is correct.

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.