Earth Control, Tr, element #43 has 2 isotopes, 90Tr and 93Tr.   If the abundance of 90Tr is 65.52 %,  what is the average atomic mass of Tr?

Q: A mass of 145 g of a certain element is known to contain approximately 3.64 x1024 atoms. What is the…

A: Let the molecular weight of the element is M gm/mol.  Moles = weight/mol. wt.  Or, moles = 145/M  We…

Q: Silver has two naturally isotopes and has an atomic mass of 107.868 amu. One isotope is Ag-109…

A:

Q: Silver has an average atomic mass of 107.87 u. If 48.18% of Ag exists as Ag-109 (108.9047 u), what…

A: Given,average atomic mass of Ag = 107.87 u% abundance of Ag-109 = 48.18 %atomic mass of Ag-109 =…

Q: Consider the following equation: The mass number of element X is: 218A+ 15B 100C + xlx +4n

A: Recall the given reaction         218A + 15B →100C + XX + 4 1n In the nuclear reaction summation of…

Q: 3) Titanium has five common isotopes: "Ti (8.0%), **Ti (7.8%), **Ti (73.4%), 49Ti (5.5%), 50 Ti…

A: Average atomic mass of an atom can be calculated asAAM=100ma​×abundancea​+mb​×abundanceb​+....​ We…

Q: What is the mass of 5.10*10^21 platinum atoms?

A: A mole represents 6.022x1023 particlesThe 6.022x1023 Number is also known as Avogdro's Number .It…

Q: An element has two naturally occurring isotopes. One is 10.013 amu and is 19.9 % abundant. The other…

A:

Q: 103 A neutral atom of rhodium-103 (0Rh) contains how many protons, neutrons, and electrons?

A: Given,  A neutral atom = Rhodium  (a). How many protons = ? (b). How many electrons = ? (c). How…

Q: How much does 4.28 x 10 21 atoms of Nickel weigh?

A: We know that, one mole of any substance contains 6.022 × 1023 atoms. We can determine the weight by…

Q: If mass # is 141 and the # of protons 58, what is the atomic symbol and the # of neutrons?

A: Given:The mass number  of atom = 141 The no of proton = 58

Q: In nature there are two isotopes of an unknown element with the following abundances and respective…

A: Two isotope N1 and N2Mass of N1 = 120.9038 amu = MN1Percentage Natural abundance of N1 = 57.25 % =…

Q: Calculate the weighted average of Ressidum. R has three naturally occurring abundances at 20.0%,…

A: Given   The atomic mass for given three isotope is 222.351 amu, 224.610 amu, and 200.841 amu. The…

Q: If an element, El, has two isotopes with the masses and abundances listed below: 72El: 72.1961 amu;…

A: The element that possesses distinct number for neutrons (might be less or more) as compared to its…

Q: Consider the following equation: The mass number of element X is: 226A + 15B → 80C + {x}X + 4 1n

A: The nuclear reaction is  226A + 15B → 80C + {x}X + 4 1n  Now , Total mass number in left hand side…

Q: 55 3. jA 25 Mn2+ ion has protons, neutrons, and electrons. а) 23; 30; 25 с) 30;B 25; 23 b) 25; 30;…

A: We will identify proton neutron and electron

Q: On another planet, the isotopes of titanium have the given natural abundances. What is the average…

A: Given,The isotopes of titanium on the planet:                Isotope          Abundance…

Q: 3. In the chromium (_24^52)Cr atom, the number of electrons, protons, and neutrons is: A) 24,28, 34…

A:

Q: If the total mass of the protons in all of the atoms of element A in the sample was 2.3 grams, how…

A: The total mass of the protons in all of the atoms of element A in the sample was 2.3 grams,  Moles…

Q: Question 11- Two isotopes of the element Fa occur naturally, with 282145 Fa At 23.4% (281.7 amu) and…

A: The atoms mass is the mass of neutrons and protons of an atom. The weighted average mass method can…

Q: Calculate average atomic weight of Uranium using isotopic abundances of its three isotopes: U-234…

A: A numerical problem based on average atomic mass, which is to be accomplished.

Q: what is the diameter of the “atom” with a nucleus this size?

A:

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: An unknown element X has the following isotopes: 52X (88.00% abundant), 4⁹X (8.00% abundant), 5⁰X…

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

Q: Argon has the following isotopic abundances: 35.967546 amu 0.3365% 37.962732 amu 0.0632% 39.962383…

A: Given,

Q: A newly discovered element, X, has 3 isotopes weighing 350 amu, 355 amu, and 357 amu. If the…

A: Given:3 isotopes of X weighs 350 amu, 355 amu, and 357 amuAbundances of these isotopes are 50.0 %,…

Q: Consider the following equation: The mass number of element X is: 213A + 23B 87C+ (x}x + 3 n

A: this problem is based on the conservation of mass. So mass in reactant will be equal to the mass in…

Q: The radioactive nuclide with the symbol 75Se is used to measure the shape of the pancreas. What is…

A: The atomic number of Se is 34 and the mass number of this radioactive nuclide of Se is 75. Atomic…

Q: QUESTION 7 _C2H4 +_ 02 = _CO2+ _ H2O - When the above equation is balanced using smallest whole…

A:

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

A:

Q: The compound, X,03, contains element .5 X and oxygen atom combined in a ratio of 2.17 grams of X to…

A: The mass ratio of atom X to oxygen in X2O3 is = 2.17: 1 In the second compound, the mass ratio of…

Q: Nitrogen has two naturally occurring isotopes, N-14 and N-15. Its atomicmass is 14.007. Which…

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

Q: An atom can be thought of as being

A: There exist three types of atoms with a single proton in their nucleus. These are the isotopes of…

Q: 85, 37X: (a) What is the atomic number? (c) How many protons are there? (e) What is the mass number?…

A:

Q: An unknown element is a mixture of isotopes ¹²⁰X and ¹²²X. The average atomic mass of X is 121.47…

A: For an element that exists as a number of isotopes, its atomic mass is calculated by taking an…

Q: Bromine is naturally occurring as a mixture of two isotopes. One isotope has a mass of 79 amu and a…

A:

Q: An unknown element X has the following isotopes: 52X (87.00% abundant), 4⁹X (8.00% abundant), 50X…

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

Q: If the mass of lithium 3 Li is 7.01600 amu, mass H= 1.00783 amu, and mass 1 in= 1.00866 amu, the…

A: The isotope given is 73Li.

Q: 1x 10 22 atoms of an element weight 1.15 gm. The atomic mass of the element is: 10 amu (b) 2.3 amu…

A: Number of atom= 3.011×1022Weight of element= 1.15 gram Mole is equal to number of atom divide by…

Q: what is the mass of 7.15 x 10^22 aluminum atoms?

A: Given, Number of Aluminium atoms = 7.15×1022

Q: 13. Consider the table below. What is the relative abundance of isotope A? Isotope Abundance A 65 B…

A: Abundance of A (Abd A) = 65 Abundance of B (AbdB) = 115 Abundance of C (AbdC) = 20 Total Abundance…

Q: Boron has two stable isotopes. What is the approximate ratio of abundance: 10B  ___ 11B?

A: The objective of the question is to find the approximate ratio of abundance of the two stable…

Q: The decay series of Uranium 238 includes 3 isotopes. Which one has the greatest abundance in a…

A: Uranium-238 is a radioactive element that undergoes a complex decay series, eventually transforming…

Q: Calucate the atomic mass: Titanium: Ti-46 (7.9 %), Ti-47 (7.3 %), Ti-48 (73.9 %), Ti-49 (5.5 %),…

A: Given data : Ti-46 = 7.9 % Ti-47 = 7.3 % Ti-48 = 73.9 % Ti-49 = 5.5 % Ti-50 = 5.4 %

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.