2 years ago

What is the oxidation state of a lone element?

Chemistry

2 answers:

FrozenT [24]2 years ago

7 0

A or D cant pin it down

N76 [4]2 years ago

3 0

Answer:

The oxidation state of hydrogen is +1 in its compounds, except for metal hydrides, such as NaH, LiH, etc., in which the oxidation state for H is -1. The oxidation states of other elements are then assigned to make the algebraic sum of the oxidation states equal to the net charge on the molecule or ion.

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Which of the following elements has the highest atomic radius, Sr or Cu

cestrela7 [59]

Answer:

Sr or Strontium

Explanation:

sr: strontium has atomic radius of 255pm

cu: copper has an atomic radius of 128pm

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A student uses 5g of carbon to extract copper metal from its ore:

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Which is a potential benefit of genetic engineering in agriculture? higher levels of toxins disruption of other genes increased

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2 years ago

Mila [183]

Answer:

Explanation:

Half life of Nobelium-253 is 97 seconds . That means after every 97 seconds half of the Nobelium amount will be disintegrated .

Time taken in bringing the sample to laboratory = 291 seconds

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N = 5 mg x $(\frac{1}{2})^3$

= .625 mg

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7 0

2 years ago