An atom has a mass number of 24 and 13 neutrons. what is the atomic number of this atom?

Asked by maham237 @ in Chemistry viewed by 364 People

1- An atom has a mass number of 24 and 13 neutrons. What is the atomic number of this atom?
2-Give the nuclear symbol for the isotope of argon for which A=38?
Enter the nuclear symbol for the isotope (e.g., 42He).

Answered by maham237 @


1.- The mass number of an atom equals the number of neutrons plus the number of protons. Then, for this atom the number of protons equals 24 less 13 = 11. The number of protons is the atomic number, so the answer is that the atomic number is 11.

2.- A = 38, means that the isotope of argon has mass number of 38. Given that the atomic number of argon is 18, this isotope has 18 protons and 38 less 18 = 20 neutrons.Then, the nuclear symbol is Ar precedeed by the numbers 38 (upper left corner) and 18 (lower left corner).

Similar Questions

What is the mass number of an ion with 105 electrons, 159 neutrons, and a +1 charge?

Asked by maham237 @ in Biology viewed by 285 persons

What is the mass number of an ion with 105 electrons, 159 neutrons and a +1 charge? Express your answer as an integer.

If an atom has 17 electrons and its mass number is 35 calculate the following

Asked by maham237 @ in Chemistry viewed by 363 persons

if an atom has 17 electrons and its mass number is 35, calculate the following: - number of protons - number of neutrons -atomic number

The mass number of an atom is the number of

Asked by admin @ in Chemistry viewed by 290 persons

The atomic number is the number of protons in the nucleus of an atom of an element. Each element has a unique number of protons. For example, an atom with …

An element has mass number 35 and neutrons 18

Asked by admin @ in Chemistry viewed by 308 persons

an element x has mass number 35 and the number of neutrons is 18 identify the group number and period of x

Do atoms have the same number of protons and neutrons

Asked by admin @ in Chemistry viewed by 283 persons

Does an atom have the same number of protons and neutrons

The mass number of an atom can be calculated from

Asked by admin @ in Physics viewed by 371 persons

To find the number of neutrons in an atom, you would subtract A.) mass number from atomic number B.) atomic number from mass number C.) atomic number from electron number …

The number of neutrons in an atom is equal to

Asked by admin @ in Science viewed by 255 persons

The number of neutrons in an atom is equal to the : A) Mass number B) Atomic number C) Mass number - atomic number D) Number of electrons

Select the set of quantum numbers that represents each electron in a ground‑state be atom.

Asked by maham237 @ in Chemistry viewed by 335 persons

Select the set of quantum numbers that represents each electron in a ground‑state be atom. n = 1, l= 0, ml= –1, ms= 1/2 n = 2, l= 0, ml= …

For each day, select the number of hours worked. timekeep time cards employee time record #0000 tim doe art dept. day in out mon. 8:00 3:10 tue. 8:05 3:25 wed. 8:00 2:30 thur. 7:55 2:45 fri. 7:58 3:38

Asked by maham237 @ in Mathematics viewed by 356 persons

First 30 elements with atomic number and mass number

Asked by admin @ in Chemistry viewed by 333 persons

1 to 30 elements with atomic number and round off atomic mass

Atomic mass of first 20 elements in whole numbers

Asked by admin @ in Math viewed by 388 persons

List of first 20 elements with atomic mass,symbol,atomic number,valency

Atomic number and mass number of first 20 elements

Asked by admin @ in Math viewed by 332 persons

List of first 20 elements with atomic mass,symbol,atomic number,valency

Atoms of the same element with different numbers of neutrons

Asked by admin @ in Chemistry viewed by 349 persons

What are atoms of the same element with different numbers of neutrons called?

A slush drink machine fills 1440 cups in 24 hours. write and solve an equation to find the number cc of cups each symbol represents.

Asked by maham237 @ in Mathematics viewed by 596 persons

Atomic mass and atomic number of first 20 elements

Asked by admin @ in Math viewed by 517 persons

List of first 20 elements with atomic mass,symbol,atomic number,valency

Most viewed questions in Chemistry

Discuss sn2 mechanism of methyl bromide using aqueous koh

Asked by admin @ in Chemistry viewed by 2186 persons

Comparing lactose percentage between whole milk and powdered milk

Asked by admin @ in Chemistry viewed by 1923 persons

Lewl letpa

Asked by maham237 @ in Chemistry viewed by 1560 persons

50 examples of unbalanced chemical equations with answers

Asked by admin @ in Chemistry viewed by 1391 persons

Chromium metal is immersed in an aqueous solution of cobalt(ii) chloride.

Asked by maham237 @ in Chemistry viewed by 1320 persons

Prepare a chart giving detailed information of carbon compounds

Asked by admin @ in Chemistry viewed by 1280 persons

Which 1 mole sample has the least entropy

Asked by maham237 @ in Chemistry viewed by 1270 persons

If you are given the assignment to cut raw poultry

Asked by maham237 @ in Chemistry viewed by 1248 persons

Effect of succinic acid on cst of phenol water system

Asked by admin @ in Chemistry viewed by 1246 persons

The reaction between aluminium powder and anhydrous barium nitrate

Asked by maham237 @ in Chemistry viewed by 1219 persons

Cnh4 lewis structure

Asked by maham237 @ in Chemistry viewed by 1142 persons

2 3 dihydroxypropanal

Asked by maham237 @ in Chemistry viewed by 1045 persons

Select true statements about the pentose phosphate pathway

Asked by maham237 @ in Chemistry viewed by 1033 persons

Crossword puzzle on carbon and its compounds class 10

Asked by admin @ in Chemistry viewed by 1007 persons

Ionic bond calculator

Asked by maham237 @ in Chemistry viewed by 983 persons