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Mumz [18]
3 years ago
10

If the atomic number of an element is 6 and its mass number is 15, how many neutrons are in the atom's nucleus?

Chemistry
2 answers:
lozanna [386]3 years ago
6 0

Atomic Number is the same as the number of protons in an element.
Mass Number is the number of Protons + Neutrons in an element.

Atomic Number: 6 means 6 Protons
Mass Number: 15 means 15 atoms that are a proton/neutron.
We are given out of the 15 atoms, 6 of them are protons, so the other 9 must be Neutrons.

15 - 6 = 9 so there must be 9 Neutrons.

There are 9 Neutrons in atom's nucleus.

Give Brainiest if you think this is the best answer and explanation. Thanks!

melisa1 [442]3 years ago
5 0
¹⁵₆X
- 6 protons
- 6 electrons
- 15-6 = 9 neutrons

:)
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Answer:

Phosphorus makes 5 bonds with other atoms

Explanation:

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These valence electrons are used to draw Lewis structure of POCl_{3}.

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Applying octet rule (atoms have eight electrons in their valence shell) and minimizing formal charge of POCl_{3}, it has been found that P makes total 5 bonds with rest of the atoms.

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2 years ago
1. A chemist prepares hydrogen fluoride by means of the following reaction:
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Answer:

a) <em>Theoretical Yield of HF = 5.64 grams</em>

b) <em>Percentage Yield = 39%</em>

Explanation:

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