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3 years ago

A neutral atom contains 5 neutrons and 4 protons. How many electrons does it contain?

Chemistry

1 answer:

Gre4nikov [31]3 years ago

6 0

The answer is it has 4 electrons. If an atom is neutral than the electrons and protons will be equal.

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What state does a maple tree enter during the winter?

Crank

D. dormancy is the correct answer

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3 years ago

You've just solved a problem and the answer is the mass of an electron, me=9.11×10−31kilograms. How would you enter this number

mihalych1998 [28]

The mass of an electron can be expressed in the box as $\boxed{{m_e} = 9.1 \times {{10}^{ - 31}}{\text{ kg}}}$ .

Further explanation:

Atom is the smallest particle that can be present in any element. It is also known as the building unit of matter. Each atom has a central part that is known as the atomic nucleus. There are three subatomic particles that constitute the atom. These particles are protons, neutrons, and electrons. The atomic nucleus consists of protons and neutrons, both are collectively called nucleons. Electrons revolve around the nucleus of an atom in definite orbits.

Protons are positively charged subatomic particles, electrons are negatively charged and neutrons have no charge. Since electrons carry a unit negative charge, these create an electric field around them. These also participate in nuclear reactions. The mass of an electron $\left( {{m_e}} \right)$ is $9.1 \times {10^{ - 31}}{\text{ kg}}$ , that of protons is $1.6726219 \times {10^{ - 27}}{\text{ kg}}$ and that of neutrons is $1.674927471 \times {10^{ - 27}}{\text{ kg}}$ . The electrons are responsible for chemical properties of elements. The distribution and arrangement of electrons is used to predict whether the element will be inert or reactive.

Therefore the required answer is $\boxed{{m_e} = 9.1 \times {{10}^{ - 31}}{\text{ kg}}}$ .

Learn more:

Component of John Dalton’s atomic theory: brainly.com/question/2357175
Basis of investigation for the scientists: brainly.com/question/158048

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Atomic structure

Keywords: atom, matter, atomic nucleus, proton, electron, neutron, subatomic particle, nuclear reactions, electric field, reactive, inert.

4 0

4 years ago

Which of the following pH numbers indicates a strong alkali?<br> a. 1<br> b. 5<br> c. 7<br> d.) 14

pochemuha

Answer:

1 is the correct answer of the question

7 0

3 years ago

Find the number of atoms in 4 mol of carbon

Phoenix [80]

No of atoms=No of moles ×Avagadro no

$\\ \tt\longmapsto 4\times 6.023\times 10^{23}$

$\\ \tt\longmapsto 24.092\times 10^{23}$

$\\ \tt\longmapsto 2.4\times 10^{24}atoms$

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3 years ago

The purpose of controlling an experiment is to _____. A. double-check your own work B. compare one theory to another theory C. p

pantera1 [17]

Make sure the results of the experiment are useful

Explanation:

In an experiment, certain variables (independent variables) are controlled to check how they affect other variables (dependent variables) and understand the relationship between them. Also, these experiments usually have a control experiment, of no change, to help compare results and increases their reliability.

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3 years ago