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Atomic Number Questions and Answers (Q&A)

John Adney
Answered: Mar 07, 2017
It's 2 as first it's hydrogen then helium then no. 3 is lithenium

4 Answers

K.Paul
Answered: Dec 11, 2017
On the periodic table, each element is assigned an atomic number. Besides showing its placement on the periodic table, the atomic number shows the number of protons located in the center of the...Read More

3 Answers

E. Stanley, Technical writer
Answered: Feb 01, 2019
The answer to this is letter A. There is sometimes a need for electrons and protons to be equal when the given atom is neutral in charge. An atom has three atomic particles. The first one is the...Read More

3 Answers

M. Parker, Internet Researcher
Answered: Feb 19, 2019
3,4,3. Protons, neutrons, and electrons are the three basic parts of an atom. The electron is a negatively charged molecule that is located at the center of the atom in the nucleus. The neutron...Read More

2 Answers

Rachit gupta, Internet Researcher
Answered: Nov 17, 2018

Atomic number of helium is 2

1 Answer

W. Pratt, Marketing Analyst
Answered: May 01, 2019
The correct answer is option A
If Phosphorous has an atomic mass of 30 and 15 neutrons the proton number is most likely 15. The mass number of of atoms in an element is equal to the s...Read More

1 Answer

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