All atoms of the same element have the same ____.a. number of neutrons
c. mass numbers
b. number of protons
d. mass
Answers
Related Questions
Which of the following combinations would result in the largest attractionbetween particles?Large charges close togetherSmall charges close togetherLarge charges far apart from each otherOSmall charges far apart from each other
Which sequence represents the relationship between temperature and volume as explained by the kinetic-molecular theory?higher temperature / more kinetic energy / more space between particles / higher volume higher temperature / less kinetic energy / less space between particles/ higher volume higher temperature / more kinetic energy / less space between particles / lower volume higher temperature / less kinetic energy / more space between particles / lower volume
A 0.20-Molar solution of K2CO3 is a better conductor of electricity than a 0.20-Molar solution of KBr. Which of the following BEST explains this observation between the two solutions. *
7 An atom that has 13 protons and 15 neutrons is an isotope of the element(1) nickel (3) aluminum(2) silicon (4) phosphorus
pOH =
pH =
[H+] =
Answers
Answer: pOH= 4.06
pH= 9.94
Explanation: pOH is the negative logarithm of concentration.
pH is the negative logarithm of concentration.
2)
3)
pH = 10
[H+] = 1 X 10^-10
Answers
Answer:
Corona
Explanation:
The outermost layer of the sun's atmosphere is called the corona, meaning “crown.” The corona is formed of thin wisps of gas that extend outward into space for millions of miles. It is much less bright than the photosphere, so we can only see it if the rest of the sun is blotted out, for example during a solar eclipse.
(b). Atoms transfer electronsto form cations and anions.
(c). Ions transfer electrons to form cations and anions.
(d). Anions and cations donate electrons.
Answers
Answer: (b). Atoms transfer electrons to form cations and anions.
Explanation:
Covalent compounds are formed by sharing of electrons takes place between non metals.Ionic compounds are formed by transfer of electrons between metals and non metals.
For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.
Sodium atom has oxidation number of +1.
Electronic configuration of sodium:
Sodium atom will loose one electron to gain noble gas configuration and form sodium cation with +1 charge.
Chlorine atom has oxidation number of -1.
Electronic configuration of chlorine:
Chlorine atom will gain one electron to gain noble gas configuration and form chloride ion with -1 charge.
In sodium chloride the one electron from sodium metal gets transferred to chlorine atom and thus form an ionic bond.
Answer:
Atoms transfer electrons to form cations and anions.
Explanation:
Covalent compounds are formed by sharing of electrons takes place between non metals.Ionic compounds are formed by transfer of electrons between metals and non metals.
4.5 x 107 cm3
4.5 x 104 dm3
5.0 x 108 mm3
Answers
if you convert all of the following metrics to m^3. Then the first one is the largest number. I know this stuff did it last year
B. Atoms of all elements contain electrons.
Answers
Answer : In the experiment of Cathode Ray, Scientist J.J. Thomson found that a stream of electricity was attracted to the positive portion of an electrical plate, which helped him to conclude that there must be a negative aspect to matter. He called this discovery as the electron.
He was the one who suggested that these small, negatively charged particles were actually subatomic particles. Which are now called as "electrons".
Since atoms are found to be neutral, when it contain negatively charged electrons it must also contain some positively charged material.