Select the correct locations on the periodic table.

Chemistry

2 answers:

ale4655 [162]3 years ago

5 0

Answer : The correct location on the periodic table of two elements have similar characteristics is, two elements present in the second column of the left side

Explanation :

The elements have similar characteristics when they are belong to the same family or group this means that when they are placed in the same column of the periodic table.

The elements of similar characteristics have same number of valence electrons.

In the given periodic table of the elements, the two elements present in the second column of the left side have similar characteristics because these two elements belong to the same family or group. While the other elements have different characteristics.

Alexus [3.1K]3 years ago

4 0

Explanation:

It is known that atoms that have same number of valence electrons will show similar chemical properties.

So, when we move from left to right across a period there occurs increase in number of valence electrons of each element. But when we move down a group then number of valence electrons remain the same.

Hence, elements of same group will show similar chemical properties.

Therefore, we can conclude that elements marked as 2 and 3 will have similar chemical properties.

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when was the last year the theory of understanding the energetics and arrangement of atoms was developed

NISA [10]

In 1897 the theory of understanding the energetics and arrangement of atoms was developed by Josheph Larmor.

It is also called solar system model of atom.

<h3>What is solar system model of atom? </h3>

The “solar system” model indicates an atom as a whole massive positive body that is the nucleus similar to the sun in the solar system with negative entities that are the electrons as the planets in our solar system revolving around it.

<h3>Why this model not accepted? </h3>

The thought about this model is that the electrons which revolves around the nucleus are the charged particles which have centripetal acceleration during the revolution. Even if they all are travelling at the same velocity in modulus, the trajectory of their velocity varies with respect to time which resulting in the centripetal acceleration. An accelerated charge particle will emit energy in the form of electromagnetic radiation. This results in the loss of energy which causes the charged particle to fall inside the nucleus. Therefore, this fails to happen.

Thus, we concluded that In 1897 the theory of understanding the energetics and arrangement of atoms was developed.

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1 year ago

What is the correct formula for Elementium Nitride?

sashaice [31]

Answer:

AlN

Explanation:

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7 0

2 years ago

Rebekah finds that a solution of sugar in water has a volume of 1. 32 fl. Oz. How should she report this amount using the metric

goldfiish [28.3K]

Rebekah reports the volume of sugar solution using metric system as 39.1 mL. Thus, option D is correct.

The metric system has been the measurement system introduced in 1790s. The system has mediated the units for the measurement of volume, mass, length.

The volume has been the space that has been occupied by matter. The volume can be denoted with SI unit L. However, the another accepted unit for volume has been mL.