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Galina-37 [17]
3 years ago
10

Which of the following substances is a base? Choose One

Chemistry
1 answer:
topjm [15]3 years ago
8 0

Answer:

Sodium Oxide

Explanation:

Most the others are salts...

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The valence electrons largely determine the
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Valence electrons largely determine the chemical properties of an element.
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How many electrons do atoms like to have in their outer shell?
irakobra [83]

Explanation:

In general, atoms are most stable, least reactive, when their outermost electron shell is full. Most of the elements important in biology need eight electrons in their outermost shell in order to be stable, and this rule of thumb is known as the octet rule.

7 0
3 years ago
How to determine the number of valence electrons using the As and Bs system
xz_007 [3.2K]

Answer:Use the K L M N shell orbit

Explanation: Valence electrons are those electrons on the outermost shell of an atomic nucleus.

The K L M N electron shell is named by a spectroscopist called Charles G. Barkla, who discovered the A X-rays ( high energy rays) and the B X-rays ( low energy rays), he later renamed the A X-rays K X-rays which is the Energy level orbit, and the B X-rays was also renamed to be the L M N and so on.

PLEASE SEE PICTURE ATTACHED

THE PICTURE SHOWS HOW TO DETERMINE VALENCE ELECTRON USING THE As AND B's WHICH ARE THE K L M N SHELL ORBIT, USING SILICON AS AN EXAMPLE.

The maximum number of electron in the K orbit is 2

The maximum number of electron in the L M N shell is 8

Therefore the number of electron found in the outermost shell becomes the number of Valence electron in that element.

4 0
3 years ago
Which of the following is not a form of energy?
Dafna1 [17]
The answer is pressure
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3 years ago
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Each of the following models represents particles present before and after a
lana [24]

Answer:

D

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According to the law of conservation of mass, matter can neither be created nor destroyed. The implication of this is that the total mass of reactants should be equal to the total mass of products.

There should be equal masses of reactants and products on both sides of the reaction equation. This most important condition is only satisfied by option D.

5 0
3 years ago
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