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
Rasek [7]
3 years ago
13

What is the neutral atom that has its first two energy levels filled, has 8 electrons in its third energy level, and has no othe

r electrons? Enter the name of the element, not the abbreviation.
Chemistry
2 answers:
Ganezh [65]3 years ago
8 0
Argon

Ar 1s²2s²2p⁶3s²3p⁶
zubka84 [21]3 years ago
8 0

Answer:

Argon

Explanation:

The arrangement of electrons in an atom is governed by the Aufbau principle according to which electrons are added to atomic orbitals such that the lowest energy orbitals get occupied first before the higher energy orbitals. The arrangement of energy levels in increasing energy order is:

1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p......

's' , 'p', 'd' orbitals can accommodate a maximum of 2,6 and 10 electrons respectively.

From the given information:

First energy level corresponds to n = 1, and is fully filled i.e. 1s²

Second energy level corresponds to n = 2, and is fully filled i.e. 2s²2p⁶

Third energy level corresponds to n = 3 and it has 8 electrons i.e. 3s²3p⁶

The neutral atom has a total of 18 electrons with an electronic configuration of:

1s²2s²2p⁶3s²3p⁶

Based on the periodic table the atom is with atomic number = 18 is argon (Ar)

You might be interested in
How do Newton's laws of motion explain why it is important to keep the ice smooth on a hockey rink so that players
andriy [413]

Answer:

How do Newton's laws of motion explain why it is important to keep the ice smooth on a hockey rink so that players can pass a puck as quickly as possible? Smooth ice reduces the unbalanced forces that would slow the hockey puck. A skydiver falls toward the ground at a constant velocity.

Explanation:

3 0
2 years ago
Read 2 more answers
Explain how mass and energy are conserved when water evaporates.
weeeeeb [17]
<span>The water molecules that are evaporationg absorb heat energy from the surrounding environment, which causes the evaporation. If 5 grams of water evaporate, then there will be 5 grams of water vapor in the air.

<span>

</span></span>
5 0
3 years ago
Read 2 more answers
Draw the most stable lewis structure of acrolein.
NeX [460]
See image below for the lewis structure of acrolein

3 0
3 years ago
Read 2 more answers
What is the term for an object's strength of motion?
Andrei [34K]

I'm pretty sure its momentum

3 0
3 years ago
Any GUY wanna talk im bore.d
harina [27]

\boxed {\boxed {Answer}}

ⁿᵘ ᵗʰˣ ⁱᵐ ᵃ ᵍᵘʳˡ -.-

6 0
2 years ago
Read 2 more answers
Other questions:
  • What is the concentration of a 0.750 l solution that contains 52.0 g of glucose (c6h12o6)?
    7·1 answer
  • When carbon is burned in air, it reacts with oxygen to form carbon dioxide. when 18.0 g of carbon were burned in the presence of
    7·1 answer
  • How many sets of quantum numbers must be used to describe the electrons in a neutral beryllium atom?
    13·1 answer
  • The first time scientists actually saw an atom was
    9·1 answer
  • The pressure of 4.2L of nitrogen gas in a flexible container is decreased to one-half its original pressure and its absolute tem
    8·1 answer
  • ___ is when water changes from gas directly to a solid
    10·2 answers
  • What process occurs during the corrosion of iron?
    5·1 answer
  • Can someone help me please. This is the last day
    10·2 answers
  • After one half life ___% of the atoms will change to a stable
    12·1 answer
  • What is the atom economy for NH4Cl<br>​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!