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
-Dominant- [34]
4 years ago
5

A neutral lithium (Li) atom has an atomic number of 3 and a mass number of 7. How many neutrons are in this atom of lithium?

Chemistry
1 answer:
WITCHER [35]4 years ago
3 0
The atomic number of an atom (Z) is equal to the number of protons.

The mass number of an atom (A) is equal to the number of protons plus the number of neutrons (N), i.e. A = Z + N

Therefore, N = A - Z = 7 - 3 = 4.

So, this neutral lithium atom has 4 neutrons.

Answer: 4.
You might be interested in
What mole ratio would you use to calculate how many mole of oxygen gas would be?
pav-90 [236]
The mole ratio one would need to calculate will be the ratio of grams of O2 are in one mole; that's the atomic mass of oxygen from the periodic table.

Oxygen has an atomic mass of 15.998 (most of the time, rounding to 16 is fine). But remember, oxygen always exists in nature as a diatomic molecule (two atoms covalently bonded together) as O2...so (32 grams O2/1 mole O2)

If you like my answer, please vote me a 'brainliest'; I'm trying to improve my site rank :-)
7 0
3 years ago
Type of bond between na+1 ion and Cl-1 ion is ion
Scrat [10]

that is a true statement can you mark me as brainliest please.

5 0
3 years ago
Read 2 more answers
Water difference between glacier and geyser
Gekata [30.6K]
Glaciers are found in areas where the net accumulation of snow exceeds the melt, therefore they are usually found in areas of high elevation, cold temperatures, and high precipitation.

Geysers are found in areas of shallow crust with high heat flow, such as hot spots.
4 0
3 years ago
Read 2 more answers
Does all Newton's laws work together
9966 [12]
I believe so ya.....
6 0
3 years ago
At room temperature, 20ÁC, water (H2O) is a liquid and oxygen (O2) is a gas. Based on kinetic molecular theory, which answer bes
vaieri [72.5K]
<span>Water molecules have a lower boiling temperature than oxygen molecules, so at room temperature they exist as a liquid rather than a gas.
hope it helps
</span>
6 0
3 years ago
Other questions:
  • Cation a has a +3 charge and is small. cation b has a +1 charge and is large. which is more likely to occupy negatively charged
    5·1 answer
  • Sand grains, pebbles, mud, shells, and leaves are all examples of _________________
    12·2 answers
  • Scientists have developed a new drug known to cure a previously incurable disease. What best explains if the new drug is a compo
    11·2 answers
  • The complete combustion of 1.00 kg of coal releases about 3.0 x 10E7 J of energy. The conversion of 1.00 kg of mass into energy
    13·2 answers
  • A solution of sulfuric acid is titrated with a solution of sodium hydroxide to the phenolphthalein end point. The sample of sulf
    10·1 answer
  • Which element has 7 valence electrons? (2 points) nitrogen (N) neon (Ne) lithium (Li) chlorine (Cl)
    5·2 answers
  • What type of energy does a ball have when it rolls down a hill?
    9·1 answer
  • Which best explains the difference between a monomer and a polymer?
    15·2 answers
  • What are the number of atoms in gallium
    13·1 answer
  • Under constant pressure a sample of hydrogen gas initially at 88°C and 9.6 L is cooled until its final volume is 3.4 L. What is
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!