Determine atomic number and mass number, Chemistry

Assignment Help:

Q. Determine Atomic Number and Mass Number?

One of the four naturally taking place isotopes of chromium has a mass number of 53. Determine the number of electrons, protons and neutrons in an atom of this isotope and write its symbol.

Begin by obtaining information on chromium from the periodic table. Chromium (Cr) is originate in the fourth row of the table in group 6 and the atomic number of chromium is 24.

You recognize that the atomic number of an element gives the number of protons in the nucleus of the atom.

Atomic number = number of protons = 24

You have as well learned that a neutral atom has equal numbers of protons and electrons consequently you can write the following expression.

Number of electrons = number of protons= 24

You as well know that the number of neutrons can be determined from the mass number and the atomic number.

Number of neutrons = mass number - number of protons

Number of neutrons = 53- 24= 29

To write down the symbol of this isotope follow this pattern.

1472_Determine Atomic Number and Mass Number.png

Substituting the known values provides this symbol for the isotope.

1541_Determine Atomic Number and Mass Number1.png


Related Discussions:- Determine atomic number and mass number

Effect of substituents on acidity - inductive effect, Effect of Substituen...

Effect of Substituents on Acidity: The complete effect of a substituent on acidity of substituted benzoic acids is because of two factors. (i) Inductive effect: If the subs

Uses of acetic acid - carboxylic acids, Uses of Acetic Acid - Carboxylic ac...

Uses of Acetic Acid - Carboxylic acids (a) Acetic Acid is used as a solvent and a laboratory reagent. (b) Acetic Acid is used as vinegar for table purpose and for manufactur

Solid ch4 is, Solid CH 4   is: (1) Molecular solid (2) Ionic solid ...

Solid CH 4   is: (1) Molecular solid (2) Ionic solid (3) Pseudo solid (4) Does not exist Ans:  Molecular solid

Quality of ghee, which parameters are analysed to confirm the quality of gh...

which parameters are analysed to confirm the quality of ghee and what are the values of tested parameters to indicate the quality grade?

Illustrate the hexagonal close packed structure, Hexagonal Close Packed (HC...

Hexagonal Close Packed (HCP) Structure:-  The cell of HCP system has 12 corner atoms, one at each corner of the hexagon with two base centered atoms, one at the top face of the

Determine the limiting reactant, 1. Wet air containing 4.0 mole% water vapo...

1. Wet air containing 4.0 mole% water vapor  at 76°F and 14.8 psia is passed through a column of calcium chloride pellets.   The pellets absorb 97% of the water and none of the oth

In how many chlorines does slicon bound, In how many chlorines does Slicon ...

In how many chlorines does Slicon bound The sito four chlorines, and is thus tetrahedral. The Cl-Si-Cl bond angle is 109.5°.

Phenol, Draw the structure of anisole and phenetole

Draw the structure of anisole and phenetole

Raising heavy weights by water pressure, Raising heavy weights by water pre...

Raising heavy weights by water pressure Get a rubber hot-water bottle. Put a one- hole stopper carrying a short glass tube tightly in the neck. Punch a hole in the bottom of a

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd