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3 years ago

Which symbol represents an atom in the ground state with the most stable valence electron configuration?

1 answer:

5 0

A stable electron configuration has 8 valence electrons and a full octet, meaning that their would be a "happy" atom and it would be non reactive.

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According to the periodic table, the neutral atom of what element has 4

liberstina [14]

Answer:

Beryllium

Explanation:

Given parameters:

Number of protons = 4

Number of neutrons = 5

Number of electrons = 4

Unknown:

Element = ?

Solution:

To determine an element, the atomic number is the most important identifier.

The atomic number is the number of protons in an atom.

Since the atom here has a proton number of 4, checking on the periodic table, it is Beryllium, Be

7 0

2 years ago

By measuring the distance from the crest of one wave to the crest of another we will know the _____ of the light.

stepan [7]

The wave length of light. This determinds the color/type of light.

4 0

2 years ago

Which of the following correctly represents the transmutation in which a curium-242 nucleus is bombarded with an alpha particle

Alekssandra [29.7K]

<u>Answer:</u> The chemical equation is written below.

<u>Explanation:</u>

Transmutation is defined as the process in which one chemical isotope gets converted to another chemical isotope. The number of protons or neutrons in the isotope gets changed.

The chemical equation for the reaction of curium-242 nucleus with alpha particle (helium nucleus) follows:

$_{96}^{242}\textrm{Cm}+_4^2\textrm{He}\rightarrow _{98}^{245}\textrm{Cf}+_0^1\textrm{n}$

The product formed in the nuclear reaction are californium-245 nucleus and a neutron particle.

6 0

3 years ago

Which of the following pairs of reactants is likely to produce a pure metal when the

storchak [24]

1. Na3PO4+Mg(NO3)2= NaNO3 + MgPO4
So this is not the answer.
2. Al+CuCl2= AlCl3+ Cu
So this is the answer.
3. Mg+O2= MgO2
So this is not an answer
4. Cl2+KI= KCl+I2
So this is also an answer

Hence B and C are answers

3 0

3 years ago

2.41 x 10^2 Cm to meters

Assoli18 [71]

We know that there are 100 cm in 1 m, so we can use this to convert to meters:

$(\frac{2.41x10^{2}cm}{1})*(\frac{1m}{100cm} )=2.41m$

Therefore we know that $2.41x10^{2}$ cm is equal to 2.41 m.

8 0

2 years ago

Read 2 more answers