Chemistry, asked by Amreetangshu, 7 months ago

an element x has atomic number of 40 and atomic mass 79.88. what is the mass number? what are the number of electrons protons and neutrons in that atom

Answers

Answered by debdattadamvis

0

Atomic number =40

Atomic mass=79.88

Mass number =atomic mass(rounded of)

=80

No of protons =no of electrons = atomic number =40

No of neutrons =mass number - no of protons

=80-40=40

Previous Question

Next Question

Similar questions

Physics, 3 months ago

imagine a situation where you can hear multiple echoes and explain it diagrammatically...

Environmental Sciences, 3 months ago

Red, yellow, blue,pink, white which flower can be seen in all these colours...

Physics, 3 months ago

. A book with many printing errors contains four different formulas for the displacement y of a particle undergoing a certain periodic motion : (a) y = a sin 2π t/T (b) y = a sin vt (c) y = (a/T) sin t/a (d) y = (a 2) (sin 2πt / T + cos 2πt / T ) (a = maximum displacement of the particle, v = speed of the particle. T = time-period of motion). Rule out...

Math, 7 months ago

the perimeter of a regular hexgon of side 5cm its...

Math, 7 months ago

The probabilities of Akash , Rahim and Naman to score a goal in a football match are 2 / 5 , 0.75 and 67 %respectively. Who has the greatest probability of success ? * Akash Rahim Naman All have equal probability...

Biology, 10 months ago

medicines taken in asthma...

History, 10 months ago

Match column A with column B A 1. hunter-gathers 2. Bhimbetka and Hunsgi 3. Pressure flaking 4 .Factory sites 5. Rook painting B 1.Places where stone was found 2. Wals of the caves 3.Earliest men 4. Palaeolithic sites 5.A technique of making stone tools...

English, 10 months ago

why does the prince use the word ' marvellous' when he says ' more marvellous than anything' Story: The happy prince Author: Oscar Wilde please.answer only if you know . I will mark it brainliest if sensible and related to the point. tomorrow I have English exam. Please...