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mariarad [96]
3 years ago
7

Define atomic mass unit. The relative atomic mass of oxygen atom is 16. Explain its meaning.

Chemistry
1 answer:
hodyreva [135]3 years ago
7 0

Answer:

The atomic mass of an atom is the number of protons plus neutrons.

Fact: In case you get it confused with atomic number, atomic number is the number of protons in the atom.

Explanation: It could have been electrons plus neutrons since electrons equals protons but electrons aren't stable which is why it is protons and neutrons.

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An isotope has 15 protons, 16 neutrons, and 15 electrons. What is the isotopic notation of the isotope
VikaD [51]

Answer:

^{31}_{15}P is the isotopic notation of the atom

Explanation:

The isotope notation is:

^a_bX

<em>Where a is the mass number = Number of protons + Number of neutrons</em>

<em>b is atomic number = Number of protons</em>

The atomic number define the nature of the atom, the element with atomic number = 15 is phosphorus, P:

^a_bP

a = 15 protons + 16 neutrons = 31

b = 15

^{31}_{15}P is the isotopic notation of the atom.

3 0
3 years ago
What is a substance made of identical atoms called?
madreJ [45]
It is called an element.
4 0
3 years ago
Read 2 more answers
Explain the difference between atomic mass and atomic number write formula and explain
soldier1979 [14.2K]
Atomic mass is the number that you get when the protons and neutrons in the nucleus are added together atomic number is the number of protons in the nucleus
5 0
4 years ago
Condenation means what
Katen [24]

Answer: Heyaa! :)

Condensation is the process of water vapor turning back into liquid water!

Explanation:

Hopefully this helps you!

-Matthew ~

7 0
2 years ago
What are the charges on ions of Group 1A, Group 3A (aluminum), and Group 5A?
arsen [322]

Answer:

Group 1A: 1+

Group 3A: 3+

Group 5A: 3+ or 5+

Explanation:

8 0
3 years ago
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