Chemistry, 07.10.2020 14:01 zarakanchi

Which one of these statements would be considered a hypothesis? * I like chocolate ice cream
I guess that you are going to wear blue shoes today
If I practice 30 minutes a day on my basketball skills, then I will get better at making baskets

Answers: 2

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Answer from: batmanmarie2004

I guess that you are going to wear blue shoes today.

Explanation:

The other ones are proven. This one is a guess, you do not know.

Answer from: crazylife77

If I practice 30 minutes a day on my basketball skills, then I will get better at making baskets.

Explanation:

Number 1 can't be a hypothesis because it is a personal preference and that has nothing to do with hypothesis.

Number 2 has no actual factual basis for concluding that and considering that hypothesis are scientific guesses based on information you already know, that wouldn't make sense.

Therefore number 3 makes the most sense considering the fact that the more you do anything the more of a feel you get for it

Answer from: Quest

assuming that your periodic table has eighteen columns, you should highlight the four elements in the third column from the left of the table.

explanation

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the $3d$ have energy higher than those in the $4 s$ orbital while lower than those of the $4 p$ orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the $4s$ orbital is therefore filled right after $3p$ orbitals and before $3 d$ orbitals.

potassium has electron configuration $[\text{ar}] 4 s^{1}$ and calcium $[\text{ar}] 4 s^{2}$ . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration $[\text{ar}] 4 s^{2} \; 3d^{1}$ and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the $ns^{2} \; (n-1) p^{1}$ and should be highlighted as well.

Answer from: Quest

Sorry i dont understand the question can you rephase it?

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Which one of these statements would be considered a hypothesis? * I like chocolate ice cream
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