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3 years ago

How many atoms of group 17 element would be needed react with one atom of a group 2 element? Explain

2 answers:

5 0

2 atoms of group 7 elements, because group 2 elements have 2 valence electrons and group 7 need just one atoms to stabilize.

shusha [124]3 years ago

3 0

Only one atom because atom with 17 electrons need that one electron to become stable

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Energy from sources that are constantly being formed is non-renewable energy.

Alisiya [41]

If they are constantly being formed then, they are called renewable energy. So the statement above is false. B.

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3 years ago

A sample of silicon rejected for use in an electronic circuit has an impurity of boron at a level of 3 parts per trillion. What

Law Incorporation [45]

Answer:

A. 3 x 10-12

Explanation:

Generally, the parts-per notation is used to represent very small concentration without any specific unit.

Parts per million is notated as $10^{-6}$

Parts per billion is notated as $10^{-9}$

Parts per trillion is notated as $10^{-12}$

Hence, 3 parts per trillion will be written as 3 x $10^{-12}$

The correct option is A.

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SCORPION-xisa [38]

Answer:

A planet's hydrosphere can be liquid, vapor, or ice. On Earth, in the places at the north and south pole, water exists in ice or glacier form, in the atmosphere it exists in vapor form and liquid water exists on the surface in the form of oceans, lakes and rivers. It also exists below ground as groundwater, in wells and aquifers. Water collects in clouds, then falls to Earth in the form of rain or snow,

Hope it helps

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3 years ago

How is conductivity related to pH?

timama [110]

Answer:

Strongly acidic [or strongly basic] solution will have high conductivity.

Explanation:

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3 years ago

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An object becomes electrically charged when:

timurjin [86]

Answer:

An object becomes electrically charged when electrons are transferred to it

Explanation:

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3 years ago