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3 years ago

WILL MARK BRAINLIEST How many electrons can be held in the energy level n = 4?

Chemistry

1 answer:

anyanavicka [17]3 years ago

4 0

Answer:

Explanation:

Each shell can contain only a fixed number of electrons: The first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on. The general formula is that the nth shell can in principle hold up to 2(n2) electrons.

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Einstein used the photoelectric effect to prove that light has what?

Tomtit [17]

Einstein used the photoelectric effect to show that light can behave both as a particle and as a wave.

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3 years ago

Which of the following statements about ions is NOT CORRECT?

madam [21]

Answer:

B. Anions are formed when an atom loses electrons.

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3 years ago

What quantity is the same among atoms of the same element?

Vedmedyk [2.9K]

Answer:

Neutrons or Neutral atoms

Explanation:

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2 years ago

An isotope of potassium with a half-life of roughly one billion years is often used in radioactive dating. This isotope decays t

melisa1 [442]

Answer : The chemical symbol for the element that results from this process is, (Ar) for argon.

Explanation :

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$_Z^A\textrm{X}+_{-1}^0\textrm{e}\rightarrow _{Z-1}^A\textrm{Y}$

The equation for the given reaction is,

$_{19}^{40}\textrm{K}+_{-1}^0\textrm{e}\rightarrow _{18}^{40}\textrm{Ar}$

Thus, the chemical symbol for the element that results from this process is, argon (Ar).

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3 years ago

Which pair of elements are in the same period?Hg & PbLi & NaB & ClO & As

Alexeev081 [22]

Answer:

Hg Pb are in one, Li and B and O are in one, and NaCl are in one, As is alone

Explanation:

Periods are horizontal

Hope this helps!

4 0

2 years ago