A horizontal row of elements in the periodic table represents a group period

Chemistry

1 answer:

castortr0y [4]3 years ago

7 0

Answer:

Period

Explanation:

Periodic trend along period:

As we move from left to right across the periodic table the number of valance electrons in an atom increase. The atomic size tend to decrease in same period of periodic table because the electrons are added with in the same shell. When the electron are added, at the same time protons are also added in the nucleus. The positive charge is going to increase and this charge is greater in effect than the charge of electrons. This effect lead to the greater nuclear attraction.

The electrons are pull towards the nucleus and valance shell get closer to the nucleus. As a result of this greater nuclear attraction atomic radius decreases and ionization energy increases because it is very difficult to remove the electron from atom and more energy is required.The electron affinity also increases along period because of greater positive charge.

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Which observation provided Albert Einstein the clue that he needed to explain the photoelectric effect? Light is made up of extr

Aliun [14]

The correct answer is

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7 0

3 years ago

Read 2 more answers

Need help I don't remember what to do?

Lina20 [59]

I'm just doing the ones that you don't have numbers already for.
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4 0

3 years ago

Predict the product for the following reaction sequence.3,4-dimethyl-7-nonanol 3,4-dimethyl-7-nonanone 6,7-dimethyl-3-nonanone 6

ra1l [238]

Answer:

Hello your question is incomplete attached below is the complete question

answer : 6,7-dimethyl-3-nonanone ( B )

Explanation:

The product for the following reaction sequence as attached below is

6,7-dimethyl-3-nonanone

The following reaction sequence can be categorized under Carbon Nucleophiles.

Carbon Nucleophiles which can be used to convert aldehydes and ketones into carboxylic acids or alkenes.