If an element has 2 fewer protons than boron, what is its electron configuration?

1 answer:

8 0

So boron has an electronic configuration of 1S2 2S2 2P1 and the element with an atomic number of 3 is Lithium which has an electronic configuration of 1S2 2S1.

So the answer is 1S2 2S1.

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stiv31 [10]

Ozone is 3molecules of oxygen i.e O3

which prevent the earth from the harmful UV rays...
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Read 2 more answers

You've just solved a problem and the answer is the mass of an electron, me=9.11×10−31kilograms. How would you enter this number

irina1246 [14]

Answer: $9.11\times 10^{-31}kg$

Explanation:

Significant figures : The figures in a number which express the value or the magnitude of a quantity to a specific degree of accuracy is known as significant digits.

Rules for significant figures:

Digits from 1 to 9 are always significant and have infinite number of significant figures.

All non-zero numbers are always significant.

All zero’s between integers are always significant.

All zero’s after the decimal point are always significant.

All zero’s preceding the first integers are never significant.

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4 years ago

Evaluate what advantage might asexual reproduction by fission have compared to sexual reproduction

Pani-rosa [81]

In the absence of a female or male an organism can still replicate giving it an evolutionary advantage which prevents it from becoming extinct. sexual reproduction requires an egg and sperm to fertilise it where as asexual reproduction is just simply the organism dividing into 2 identical usually organisms

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4 years ago

What is the number of carbon atoms in a cycloalkyne with 8 hydrogen atoms

Slav-nsk [51]

Answer:

Explanation:

C4H8

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3 years ago

What is the mass of helium atom whose atomic weight is 4.003 g/mol?

tino4ka555 [31]

Answer:

Atoms He (Avogadro’s number) → Moles of He (molar mass of He) → Mass of He

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• Avogadro’s Number: Avogadro’s number gives us the number of entities present in 1 mole: 6.022 × 1023 He atoms in 1 mole of He

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3 years ago