1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
wariber [46]
3 years ago
9

Sodium is going in group 1, period 3. It contains A. One valence electron in its 3rd energy shell B three valence electron in it

s 1st energy shell C. 11 protons, 11electrons , 11 neutrons D. 11 protons, 11 electrons and 23 neutrons
Chemistry
1 answer:
topjm [15]3 years ago
5 0

Answer:

The correct answer is option A, that is, one valence electron in its third energy shell and option C, that is, 11 electrons and 11 protons.

Explanation:

The outermost electrons and the ones that take part in the process of bonding are termed as valence electrons. The atomic number of sodium is 11, thus, it possesses 11 protons and the atoms are neutral so it suggests that sodium has 11 electrons. By electronic configuration, it can be seen that in sodium, two electrons are present in the first shell, 8 in the second, and only one electron in the third shell, that is, 2.8.1. The electron present in the third shell is the valence electron.

You might be interested in
4. How might the process of making paper from wood be changed to produce paper that is not acidic?​
kicyunya [14]

Answer:it is sterilized in the process

Explanation:

5 0
3 years ago
There is a 30g of be-11 it has a half-life of about 14 seconds how much will be left in 28 seconds
Lelu [443]

There will be 7.5 g of Be-11 remaining after 28 s.

If 14 s = 1 half-life, 28 s = 2 half-lives.

After the first half-life, ½ of the Be-11 (15 g) will disappear, and 15 g will remain.

After the second half-life, ½ of the 15 g (7.5 g) will disappear, and 7.5 g will remain.

In symbols,

<em>N</em> = <em>N</em>₀(½)^<em>n</em>

where

<em>n</em> = the number of half-lives

<em>N</em>₀ = the original amount

<em>N</em> = the amount remaining after <em>n</em> half-lives

6 0
3 years ago
Define electron affinity
LekaFEV [45]
Electron affinity corresponds to the energy released when an electron is added to<span> a </span>neutral atom in the gas phase<span>.

hope this helps!</span>
8 0
3 years ago
Sodium chlorate decomposes into sodium chloride and oxygen gas as seen in the equation below.
ad-work [718]

Answer:

4.62

so 5

the ratio is 2 na chlorates for 3 O2 so multiply 7 by 2/3

Explanation:

4 0
3 years ago
Ocean water Choose one: A. is less dense than freshwater. B. salinity decreases as seawater evaporates. C. contains dissolved sa
Genrish500 [490]

Answer: the answer is C

Explanation:

8 0
3 years ago
Other questions:
  • What method of separation would work best on a homogeneous mixture salt water? Select all that apply. filtration distillation ev
    7·2 answers
  • Will magnesium and fluorine atoms most likely form an ionic bond or a covalent bond?
    12·2 answers
  • An uncharged atom of gold has an atomic number of 79 and an atomic mass of 197. this atom has ______ protons, ______ neutrons, a
    15·2 answers
  • What kind of chemical bond holds each oxygen atom to the phosphorus atom
    11·1 answer
  • How much heat is required to convert 2.73 g g of water at 32.0 ∘ C ∘C to steam at 100.0 ∘ C ∘C ? (Δ H vap ( H 2 O)=40.7kJ/mol,He
    10·2 answers
  • How are scientist able to protect people from tornadoes
    12·1 answer
  • How does the amount of baking soda used affect the size of the cookie baked?
    13·1 answer
  • PLEASE HELP! Which rock is an example of a chemical sedimentary rock?
    15·2 answers
  • If the order of a reaction with the regard to reagent A is 2, when the concentration of A doubles, the rate will
    15·1 answer
  • Calculate the volume of hydrogen that combines with 12 cm³ of chlorine gas to form hydrogen chloride.The games react at the same
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!