An atom's valence electron shell Multiple Choice1. is filled when it has three electrons. 2. determines its chemical reactivity. 3. determines its atomic mass. 4. is filled with positively charged particles.5. is filled identically for every element.
Answers
Answer: An atom valence electron shell determines its chemical reactivity.
Explanation:
An atom's valence electron shell determines its chemical reactivity. The amount of electrons in the outermost shell of an atom is its valence electron and it determines how reactive the atom is.
The reactivity of an atom depends on the number of electrons in its outermost shell. Atoms that has their outermost electrons full e.g noble gases like argon, krypton etc are unreactive because there is no room for the atom to donate or accept any electron.
Elements like sodium and chlorine are reactive because they possesses 1 and 7 electrons in their outermost shell respectively as such they can donate and accept electrons making them reactive elements.
The valence electron shell of an atom determines its chemical reactivity. This is due to the role these outermost electrons play in the formation of chemical bonds. Atoms aim to achieve a stable state, typically with eight electrons in their outermost shell, through accepting, donating, or sharing electrons.
The correct answer to the multiple choice question about the atom's valence electron shell is '2. determines its chemical reactivity'. The outermost shell of an atom is known as the valence shell. This shell, holding the valence electrons, is essential in determining an atom's chemical reactivity. This is because it's the valence electrons that are engaged in the formation of chemical bonds.
Chemical reactivity refers to the ease with which an atom gains, loses, or shares electrons. Stable atoms, like helium or larger atoms with eight electrons, are less likely to participate in chemical reactions. They already have a filled valence shell. However, other atoms, those with less than eight electrons, will strive to complete their outer shell by interacting with other atoms, either accepting, donating or sharing electrons to achieve stability.
Importantly, not all elements have enough electrons to completely fill their outermost shells and so they form chemical bonds by sharing, accepting, or donating electrons to other atoms. The formation of these bonds is largely determined by what is often referred to as the 'octet rule', which states that atoms seek to fill or have eight electrons in their outermost electron shell to achieve greater stability.
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I had it on a test.
Answers
The frequency is 30,000 per second.
That's the same thing as 30 KHz.
b. Gravitational and magnetic forces are the most alike because they are both types of charges that occur in nature.
c. Nuclear and magnetic forces are the most alike because they are both related to mass and weight.
d. Strong nuclear force is most like electric because they are both related to distance.
Answers
Answer:
d) strong nuclear force is most like electric because they are both realted to distance.
Explanation:
btw good luck with 01.08 Motion Module Exam for Physical Science.
I saw three different objects fall to the ground…an acorn, a leaf, and a small stick. I wondered how and why they fell the way they did. The stick fell from the very top of the tree and seemed to almost “slow down” about half way down. The acorn got faster all the way to the ground. Yet the leaf would just float back and forth in a calm rhythm like motion.
Furthermore, I could see the moon sitting up in the sky just waiting to peak over the trees at dark.
How is it that all objects are apparently affected by the earth’s gravity but they seem to respond differently? If gravity is a force that affects all objects…shouldn’t all objects respond the same? Interesting Phenomenon huh….
Can you explain what is happening with each of these four objects (including the moon)?
Answers
Answer:
gravity effects only the mass of an object
Explanation:
an acorn is heavier that a stick and it's round shape gives it less wind resistance so gravity pulls it down faster. A stick vertical has little wind resistance but when rotated to when it is horizontal it has more resistance so it slows down but the the force of gravity is still as strong. A leaf has very little mass and it's shape provideds lots of wind resistance so it falls slower. The moon is not only effected by the earth's gravity it is also effected by the suns. It has its own gravity as well. with all these factors it stays in place and moves with the earth.
She can measure the volume and mass of the marble, the volume and mass of the water, and the volume and mass of the graduated cylinder.
She can measure the volume and mass of the marble, the volume and mass of the water, and the mass of the graduated cylinder.
She can measure the volume of the marble and water, and the mass of the graduated cylinder.
She can measure the mass of the marble and water, and the volume of the graduated cylinder.
Answers
Answer:
Its B. She can measure the volume and mass of the marble, the volume and mass of the water, and the mass of the graduated cylinder.
Explanation:
I just did it
Answer:
The awnser is actually B.
Explanation:
She can measure the mass of the water, marble and the graduated cylinder with the balance.
The volume of the water can be shown on the marked graduated cylinder, the volume of the marble can be measured by the volume difference of the water before and after the marble is put in.
Answers
Answer:
a) NaOH volume at the equivalence point is 100 ml.
b) NaOH volume at the equivalence point is 45 ml.
Explanation:
To calculate the concentration of acid, we use the equation given y neutralization reaction:
where,
are the n-factor, molarity and volume of acid.
are the n-factor, molarity and volume of base
a) If a 0.100 M NaOH (aq) solution is used to titrated with 50.0 mL of 0.200 M HBr(aq).
We are given:
Putting values in above equation, we get:
b) If a 0.100 M NaOH (aq) solution is used to titrated with 30.0 mL of 0.150 M (aq).
We are given:
Putting values in above equation, we get: