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Murrr4er [49]
3 years ago
6

If a boron atom has 5 protons and 6 neutrons then how many electrons does it have?

Chemistry
2 answers:
3241004551 [841]3 years ago
8 0

Answer:

5 elections

because no. of electrons =no.of proton= atomic number.

sasho [114]3 years ago
4 0

Answer:

\huge\boxed{\sf 5 \ electrons}

Explanation:

<u>In an atom:</u>

<h2>No. of protons = No. of neutrons</h2>

Given that the No. of protons = 5.

So,

No. of electrons = 5

Hope this helped!

~AnonymousHelper1807

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How are priorities assigned to each group bonded to a tetrahedral stereogenic center?
inn [45]

To assign a priority to an atom that is part of multiple bonds, treat the multiple bonds as an equivalent number of single bonds. Hence, option A is correct.

<h3>What is a stereogenic centre?</h3>

A carbon atom is a chiral (stereogenic) centre if it is tetrahedral (sp3) and has four different groups (ligands) attached to it.

To assign a priority to an atom that is part of multiple bonds, treat the multiply bonded atom as an equivalent number of singly bonded atoms.

If two isotopes are bonded to the stereogenic centre, the isotope with the higher mass number has a higher priority.

Hence, option A is correct.

Learn more about the stereogenic centre here:

brainly.com/question/12995502

#SPJ1

8 0
2 years ago
An unknown liquid has a mass of 4.25 × 108 mg and a volume of 0.250 m3. what is the density of the liquid in units of g/ml?
mrs_skeptik [129]
Density= mass/volume
             step  one :
  convert  m3  to  ml
1m^3  =1000000ml
0.250m^3 x1000000=250000ml
         
           step  two:  convert  mg   to  g
 1mg=0.001g,  therefore 4.25 x108mg=0.459g
density  is  therefore= 0.459g/250000=1.836 x10^-6g/ml
8 0
4 years ago
Read 2 more answers
Which of the following provided evidence that most of the mass of the atom, as well as all of the positive charge, is concentrat
gayaneshka [121]

Answer:

5. the scattering of α particles by a metal foil

Explanation:

This is the classical Rutherford's experiment in which he bombarded a thin foil of gold with alpha particles which are positively charged helium nucleus.

He did observed that most of the particles passed through the foil relatively undeflected or if they were deflected it was by a very small angle.

Once in a while the alpha particle rebounded completely. An analogy is the one typically mentioned that it was as if we throw a ball at a piece of paper and it rebounds toward us.

This observations led Rutherford to conclude that the nucleus of the atom is  very small positely charged and  that the  atom is relatively empty  with electrons of very small masses. His model is referred as the Plum Pudding model and later Bohr modified it to the planetary model.

4 0
4 years ago
The net force on an object that is accelerating at a rate of 4 m/sec is 255 N. What is the mass of the object in kg?
aleksklad [387]

Answer:

Given - acc = 4 m/ s^2

Force = 255 N

To find = mass

Solution -

Using the formula,

f = m \times a

255 = Mass × 4

255 /4 = Mass

63.75 = Mass

1 N = kg m/s^2

63.75 kg = Mass

7 0
3 years ago
Which of these is a chemical property of a material?
AlexFokin [52]

Answer:

Flammability.

Explanation:

Chemical properties of a substance are properties of a substance that occur in the chemical reactions in which it is involved.  These are the basis for the classification of substances, such as metals, halogens, acids, alcohols, alkenes, arenes, etc. A class of substances is characterized by chemical properties common to that group. Differences in the chemical and physical properties of substances allow the substance to be identified, and the components of a mixture of substances to be separated and purified.

The chemical properties of a substance are its chemical stability, reactivity, oxidizability, acidity, bromine number, polymerisability, flammability, toxicity, etc. These can be determined by chemical exposure.

5 0
3 years ago
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