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Harman [31]
3 years ago
7

An atom of boron has an atomic number of 5 and an atomic mass of 11. The atom contains:. . A. 5 protons, 6 electrons, and 5 neut

rons.. . B. 11 protons, 11 electrons, and 5 neutrons.. . C. 5 protons, 5 electrons, and 6 neutrons.. . D. 11 protons, 6 electrons, and 6 neutrons.
Chemistry
2 answers:
Mars2501 [29]3 years ago
8 0
<span>C. 5 protons, 5 electrons, and 6 neutrons</span>
Alinara [238K]3 years ago
6 0
The atomic number of an element is the number of protons present. Its mass number is the sum of the number of protons and neutrons. The number of electrons in the atom of this element is equal to that of protons if it is not charged. From the given, the answer for this item is letter C. 5 protons, 5 electrons, and 6 neutrons.
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An ant carries a morsel of food 4.26 meters along a straight path to his nest. he then turns around and follows the path back to
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<span>Answer: 0.00 meters

  Solution:

    Step 1: Define displacement DISPLACEMENT = a vector quantity that describes "linear or angular distance in a given direction between a body or point and a reference position."

  Step 2: Understand the question

 Assumption 1: Assume that when the ant moves 4.25 meters from its origin to its nest, it is moving in a positive direction (on a graph you would draw a line along the x-axis from its origin to +4.25).

  Assumption 2: Assume that when the ant "turns around...back to the source of food", it is moving back in the negative direction (towards the origin).

   Step 3: Analyze the question

  What is the distance between where the ant originally started and where it ended its journey?

  The ant started and ended its journey in the same place.

 While it traveled a distance of 8.52 meters (2 * 4.26 = 8.52), it's displacement is actually 0.00 meters (4.26 + (-4.26) = 0.00)

  Therefore, the answer is 0.00 meters</span>
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3 years ago
Predict the electron pair geometry and the molecular structure of each of the following molecules or ions: (a) ClNO (N is the ce
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Answer:

See explanation

Explanation:

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The electron domain geometry of Cl2SO  is tetrahedral due to the four electron pairs around the central atom. However, due to the lone pair on sulphur, the molecular geometry is  triagonal pyramidal.

In SO2F2, sulphur the central atom is surrounded by four electron pairs which are all bonding groups hence both the molecular geometry and the electron pair geometry is tetrahedral.

In XeO2F2, the central atom is Xe. There are five electron pairs around the Xe central atom four of which are bonding groups. The electron domain geometry and molecular geometry is trigonal bipyramidal.

For ClOF2 , the central atom Cl is surrounded by four electron pairs hence the electron pair geometry is tetrahedral but it is an AX3E(three bonding groups and one lone pair are present in the structure) specie hence it is trigonal pyramidal.

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