Question

what is the atomic number of urea and atomic mass its place in perodic table ?​

Answer 1

Answer:

Atomic; Nu... Symbol Name Atomic We...

1 H Hydrogen 1.00797

2 He Helium 4.00260

3 Li Lithium 6.941

Explanation:

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Answer 2

Answer:

At the upper left is the atomic number, or number of protons. In the middle is the letter symbol for the element (e.g., H). Below is the relative atomic mass, as calculated for the isotopes found naturally on Earth. At the very bottom is the name of the element (e.g., hydrogen).