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maks197457 [2]
3 years ago
12

What is the number of electrons in the highest principle energy level of an

Chemistry
1 answer:
Margarita [4]3 years ago
3 0

Answer:

8 electrons

Explanation:

as the the 1st period (H and He), it can hold up to 2 electrons. in the 2nd period (Li, Be, B, C, N, O, F and Ne), it can hold up to 8 electrons. Itstops at 6 when it reached O. add the lelectrons that you have

2+6=8

8 electrons

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B) How does electron gain enthalpy change along a period and in a group?​
chubhunter [2.5K]

Answer:

Electron gain enthalpy becomes more and more negative from left to right in a period. As we move across a period from left to right the atomic size decreases and the nuclear charge increases

3 0
3 years ago
Read 2 more answers
The mixing of which pair of reactants will result in a precipitation reaction csi(aq) + naoh(aq) hcl+ca(oh)2
Fudgin [204]
<span>Pb(NO3)2(aq) + K2SO4(aq) → PbSO4(s) + 2 KNO3(aq) is </span>
7 0
3 years ago
(a) Red light has a wavelength of roughly 700 nm. What is the wavelength in m? ball park 10.10' (b) What is the wavelength of re
joja [24]

Explanation:

1)

a) Wavelength of red light = 700 nm

1 nanometer = 10^{-9} meter

Wavelength of red light in meter will be:

=700 nm=700\times 10^{-9} m=7.00\times 10^{-7} m

b) Wavelength of red light = 7.00\times 10^{-7} m

1 meter  = 39.3701 inches

Wavelength of red light in inches will be:

7.00\times 10^{-7} m=7.00\times 10^{-7}\times 39.3701 inches

=2.7559\times 10^{-5} inches

2)

Value of distance given = 90.123 km

1 km = 3280.84 feet

90.123 km=90.123 \times 3280.84 feet=295,679.1433 feet

1 foot = 0.1515152 chain

295,679.1433 feet=295,679.1433\times 0.1515152 chain

=44,799.88453 feet\approx 4.48\times 10^4 chains

Value of distance in chains:

90.123 km=4.48\times 10^4 chains

3 0
3 years ago
How many atoms are in you
kari74 [83]
Assuming the person has about 154 pounds (70kg) the weight of an average human. There would be around 7000000000000000000000000000 atoms
or 7 x 10^27
5 0
4 years ago
I need help with #4 please
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Answer:

1. Land 2. open 3. broken 4. Lava matter 5. Force of the plates

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