2 years ago

The atomic nucleus does not contain ____________, which are negatively charged subatomic particles.

1 answer:

3 0

Only protons and neutrons are found in the nucleus of an atom. Electrons reside in orbitals surrounding the nucleus.

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balu736 [363]

Answer:

Explanation:

Option B is the correct answer

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Which of the following atoms has the highest first

77julia77 [94]

Answer:

Helium

Explanation:

The first ionization energy varies in a predictable way across the periodic table.

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2 years ago

The formula for calcium oxide is CaO. What are the formulas for magnesium oxide and strontium oxide?

Hunter-Best [27]

Answer:

Formula of magnesium oxide is MgO and formula of strontium oxide is SrO

Explanation:

Ca, Mg and Sr are same group bivalent metals.

Oxygen is a bivalent element

In general, formula of a compound made of a cation $M^{x+}$ and an anion $A^{y-}$ is $M_{y}A_{x}$ for $x\neq y$

When x = y, formula of the compound becomes MA

As both these metals and oxygen are bivalent therefore formula of magnesium oxide is MgO and formula of strontium oxide is SrO.

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3 years ago

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Does xenon react with nitrogen and explain why

KiRa [710]

No, xenon will not react on Nitrogen because xenon only reacts with oxygen and fluorine. Xenon only reacts with the 2 elements because these 2 elements contain a strong electronegative element which is high in energy barrier that can move the electrons inside xenon elements. Xenon is an element with a symbol of Xe, it is odorless and colorless gas. Common uses of xenon are flash lamps and arc lamps. Xenon is a luminous element, it glows when placed near to high voltage electric field.

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2 years ago

The amount of charge that passes through a wire in a given period of time is the rate of electric __________.

stich3 [128]

C. The electric current

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