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Virty [35]
3 years ago
8

BRAINLIEST TO CORRECT ANSWER ​

Chemistry
1 answer:
rosijanka [135]3 years ago
7 0

Answer:

A right? I'm pretty sure it's A

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antoniya [11.8K]

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A group of atoms bonded together by different chemical reactions. It is the smallest fundamental unit of a chemical compound.

Explanation:

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3 years ago
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An element with the electron configuration: [noble gas] ns2 (n - 1)d10 np3 has how many_____________ valence electrons.
Marina86 [1]

Answer:

The correct option is e. 5

Explanation:

An element with the electron configuration [noble gas] ns² (n - 1)d¹⁰ np³ belongs to the nitrogen group element - group 15 - in a period higher than 2. The element could be As, Sb or Bi. For example, arsenic (As) has the electron configuration [Ne] 4s² 3d¹⁰ 4p³.

The valence electrons are those in the highest energy level, in a s or p sublevel. For the elements with the general electron configuration [noble gas] ns² (n - 1)d¹⁰ np³ has 5 valence electrons: 2 electrons in a s sublevel and 3 electrons in a p sublevel. The electrons in the d orbital are in a lowest energy level (n-1).

Therefore, the correct option is e. 5.

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3 years ago
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Work showing on photo

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The pressure of a 12ml sample of gas is 1atm at 400K. The temperature is increased the new pressure is 1.5atm. What is the new t
jeka57 [31]

Answer:

600K

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P1/T1 = P2/T2

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T2 = 600K

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Depending how much data you have i would use a circle graph if you have like more then 5 but if you have less then that a bar or a line graph would be fine
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