The smallest particle of an element is a(n) .<br>atom<br>molecule<br>DNA

How did the ancient greek understanding of atomic particles likley influence dalton research?

GalinKa [24]

Answer:

The Greeks called these particles atomos, meaning indivisible, and the modern word “atom” is derived from this term. Democritus proposed that different types and combinations of these particles were responsible for the various forms of matter.

Explanation:

hope it helps

7 0

3 years ago

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Write the full ground-state electron configuration for each:<br> (a) Rb (b) Ge (c) Ar

Natasha_Volkova [10]

Answer:

(a) Rb

$1s^22s^22p^63s^23p^63d^{10}4s^24p^65s^1$

(b) Ge

$1s^22s^22p^63s^23p^63d^{10}4s^24p^2$

(c) Ar

$1s^22s^22p^63s^23p^6$

Explanation:

(a) Rb

Atomic number = 37

The electronic configuration is -

$1s^22s^22p^63s^23p^63d^{10}4s^24p^65s^1$

(b) Ge

Atomic number = 32

The electronic configuration is -

$1s^22s^22p^63s^23p^63d^{10}4s^24p^2$

(c) Ar

Atomic number- 18

The electronic configuration is -

$1s^22s^22p^63s^23p^6$

3 0

2 years ago

A stable, binary ionic compound exists where the cation (A) has a change twice in magnitude than that of the anion (X)

love history [14]

Answer:

AX₂

Explanation:

Binary compounds:

The compounds which are made up of the atoms of only two elements are called binary compounds.

For example:

The following compounds are binary:

HCl

H₂O

NH₃

HCl is binary because it is composed of only hydrogen and chlorine. Ammonia is also binary compound because it is made up of only two elements nitrogen and hydrogen.

water is also binary because it is also made up of only two elements hydrogen and oxygen.

In given question it is stated that the charge of cation is twice than the anion which means its charge would be +2 thus anionic part will have the charge -1. In neutral compound the positive and negative charges must be equal in magnitude to cancel the effect of each other and make the compound neutral. So, there must be two anionic atom present so that charge becomes -2 and cancel the +2 charge of cationic part. Thus the formula will be,

AX₂

A⁺²X₂⁻²

8 0

3 years ago

Consider the general reversible reaction. Lower A upper A plus lower B upper B double-headed arrow lower C upper C plus Lower d

dimulka [17.4K]

Answer: K e q equals StartFraction StartBracket upper C EndBracket superscript lower c StartBracket upper D EndBracket superscript lower D over StartBracket upper A EndBracket superscript lower a StartBracket upper B EndBracket superscript lower b EndFraction.

Explanation:

Equilibrium constant is the ratio of the concentration of products to the concentration of reactants each term raised to its stochiometric coefficients. It is represented by the symbol $K_{eq}$

The balanced chemical reaction is:

$aA+bB\rightleftharpoons cC+dD$

The expression for $K_{eq}$ is written as:

$K_{eq}=\frac{[C]^c\times [D]^d}{[A]^a\times [B]^b}$

Thus the correct option is K e q equals StartFraction StartBracket upper C EndBracket superscript lower c StartBracket upper D EndBracket superscript lower D over StartBracket upper A EndBracket superscript lower a StartBracket upper B EndBracket superscript lower b EndFraction.

3 0

3 years ago

How many moles are there in 9.115 grams of HCI?

Crazy boy [7]

I do not know, i just need points :/

8 0

2 years ago

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The smallest particle of an element is a(n) .atommoleculeDNA​

The smallest particle of an element is a(n) .atommoleculeDNA