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Angelina_Jolie [31]
4 years ago
15

The atomic radii of Li, Na, and Rb are 152 pm, 186 pm, and 244 pm, respectively. What is a reasonable estimate for the atomic ra

dius of K? Group of answer choices 231 pm
105 pm
268 pm
163 pm
Chemistry
2 answers:
Grace [21]4 years ago
6 0

Answer:

<h3>The radii of potassium is <u><em>231 pm</em></u></h3>

Explanation:

erastova [34]4 years ago
3 0

Answer:

The radii of potassium is 231 pm

Explanation:

Atomic radii trend along group:

As we move down the group atomic radii increased with increase of atomic number. The addition of electron in next level cause the atomic radii to increased. The hold of nucleus on valance shell become weaker because of shielding of electrons thus size of atom increased.

The given elements are present in same group i.e group one,

Li     152 pm

Na    186 pm

K

Rb    244 pm

The radii of potassium must be greater than sodium and smaller than rubidium.

Thus the value must be between 186 pm - 244 pm

it means the radii of potassium is 231 pm.

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3 years ago
Which occurs whenever valence electrons are shared or transferred between atoms?
Tanzania [10]

Whenever electrons are shared or transferred between atoms there is a chemical reaction.

The electrons that are being transferred between atoms (two or more) create new bonds, which enable the production of a new substance. This process is then known as a chemical reaction.

4 0
4 years ago
Which of the following would be investigated in reaction stoichiometry? Group of answer choices The types of bonds that break an
DENIUS [597]

Answer:

The mass of potassium required to produce a known mass of potassium chloride

Explanation:

Stoichiometry deals with the relationship between amount of substances, mass of substances or volume of substances required in a chemical reaction. Stoichiometric relationships may involve reactants alone or reactants and products. These relationships are normally in the form of simple proportion.

A typical example is our answer option, the mass of potassium required could be used to determine the mass of potassium chloride produced after a balanced reaction equation is written.

7 0
3 years ago
When h2o is added to a compound in a chemical equation, a new compound can be formed via what type of reaction?
Scorpion4ik [409]

When water is added to a compound in a chemical equation, a new compound can be formed, it is called a hydrolysis reaction.

<h3>What is hydrolysis reaction?</h3>

There are so many kinds of reaction in chemistry we know that a chemical reaction occurs between reactant molecules in order to yield products in the reactants.

The hydrolysis reaction is a breaking up reaction. In a hydrolysis reaction, water is used to break up a molecule. Hence in a hydrolysis reaction water could be regarded as one of the reactants in the reactions going on in the system.

We know that a hydrolysis is a reaction in which water reacts with another reactant molecule to yield products in the reaction. Thus, when water is added to a compound in a chemical equation, a new compound can be formed, it is called a hydrolysis reaction.

Learn more about hydrolysis:brainly.com/question/12237250

#SPJ1

5 0
2 years ago
Find the density of a piece of glass with a mass of 500g and a volume of 200cm3
kykrilka [37]
Density = mass/volume
D = 500 g /200 cm^3
D = 2.5 g/cm^3

hope this helps!
3 0
3 years ago
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