According to the bohr model, how do electrons move in atoms?

Chemistry

1 answer:

Marysya12 [62]3 years ago

6 0

they move in fixed orbits around the nucleus

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What’s the correct answer

Fed [463]

The correct answer is:
_________________________________________________________
" F and Br , because they are in the same group" .
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Note:
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Choice [B]: "F and Br ; because they are in the same period" ; is incorrect; since "F" and "Br" are not in the same "period" (that is, "row").
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Choice [C]: "Na and Mg; because they are in the same group {"column"} ; is incorrect; since: "Na" and "Mg are NOT in the same group {"column"].
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Choice [D]: "Na and Mg" ; because they are in the same period {"row"}; is incorrect. Note: "Na" and "Mg" are, in fact, in the same period {"row"}. However, as aforementioned, {Mg and Na} are not in the same group {"column".}.

Note: The similiarities in physical and chemistry properties among elements are determined and organized — or tend to be so—by "groups" {"columns"} — NOT by "periods" {rows}.
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3 0

4 years ago

Find the simple interest on a $22,000 principal, deposited for 4 years at a rate of 4.25%

Makovka662 [10]

Answer:

$25,985.25

Explanation:

Assuming it is compounded annually.

5 0

3 years ago

According to the law of conservation of matter, which statement about chemical reactions is true?

mihalych1998 [28]

Answer:

Atoms cannot be created or destroyed by chemical reactions.

Explanation:

5 0

3 years ago

Three isotopes of oxygen are oxygen-16 oxygen-17 and oxygen-18. Write the symbol for each, including the atomic number and mass

Karo-lina-s [1.5K]

The symbol of an isotope is:
$^A _Z X$
A - the mass number
Z - the atomic number
X - the symbol of an element

The symbol of oxygen is O.

The atomic number is the same for all isotopes of one element. For oxygen it's 8, because every atom of oxygen has 8 protons in its nucleus.

The mass number is the number of nucleons (protons + neutrons) in the nucleus of an atom, and it's given in the name of an isotope. Oxygen-16 has the mass number 16, oxygen-17 has the mass number 17, oxygen-18 has the mass number 18.

Oxygen-16: $^{16} _8 O$

Oxygen-17: $^{17} _8 O$

Oxygen-18: $^{18} _8 O$

5 0

3 years ago

How does the atomic radius change going down and across the periodic table?

spin [16.1K]

Answer:

In general, atomic radius decreases across a period and increases down a group. Across a period, effective nuclear charge increases as electron shielding remains constant.

Explanation:

4 0

3 years ago

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