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4 years ago

Thomson's model suggested that electrons were mixed into the sphere of an atom much like raisins ?

1 answer:

8 0

True, because his model has the electrons in the sphere of the atom, Thomson’s model was called the “Plum Pudding” model because it was popular and relatable at his time.
Hope this helps!! ^v^

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Which of the following is true of an electrolytic cell?

lina2011 [118]

The answer is A. An electrolytic cell is by definition a non-spontaneous chemical reaction that uses something like a battery to power it. The spontaneous counterpart is the voltaic cell.

Also, try googling your questions before asking them on here. You'll get more detailed, quicker, and more reliable answers.

7 0

3 years ago

The elements in group 17 of the periodic table are all called halogens. All halogens have the same

Nataly_w [17]

Answer:

number of valence electrons

Explanation:

All of the elements in group 17, also known as group 7A, have 7 valence electrons.

No two elements have the same atomic number nor atomic mass in elemental form.

Halogens may have any number of isotopes.

6 0

4 years ago

Read 2 more answers

Please help 25 points!!!

scoundrel [369]

Answer:

solve this and get 25 points.

3 0

2 years ago

The shape (or geometry) of the amide anion, NH2-, the number of lone pairs on nitrogen, and the hybridization at nitrogen are, r

PtichkaEL [24]

Answer : The correct option is, (B) bent, 2, and $sp^3$

Explanation :

Formula used :

$\text{Number of electron pair}=\frac{1}{2}[V+N-C+A]$

where,

V = number of valence electrons present in central atom

N = number of monovalent atoms bonded to central atom

C = charge of cation

A = charge of anion

The given molecule is, $NH_2^-$

$\text{Number of electrons}=\frac{1}{2}\times [5+2+1]=4$

Number of bond pair = 2

Number of lone pair = 2

The total number of electron pair are 4 that means the hybridization will be $sp^3$ and the electronic geometry of the molecule will be tetrahedral.

But as there are 2 atoms around the central oxygen atom, the third and fourth position will be occupied by lone pair of electrons. The repulsion between lone and bond pair of electrons is more and hence the molecular geometry will be bent or angular.

Hence, the correct option is, (B) bent, 2, and $sp^3$

3 0

3 years ago

Which is evidence that a chemical reaction has occurred? A) a phase change occurs B) a new gas is observed in the form of bubble

sweet [91]

Answer:

I think A) a phase change occurs

7 0

4 years ago