there is no answer
because everyone is perfect in their own way
;)
B. The shorter the half-life, the more dangerous the radioisotope.
C. Half-life predicts which atoms in a radioactive sample will decay.
I think it`s A?
it is A Half-life measures the rate of decay of a radioisotope.
I took the test
The discoverer of the electron was Thomson. J. J. Thomson portrayed his atom model to look like a plum pudding. In his model, he described that an atom is composed mainly of electrons stuck within a sea of positive material.
The 'plum pudding' model of the atom, which depicted negative electrons embedded in a positively charged mass, was proposed by J.J. Thomson in 1904. This model was later superseded by Ernest Rutherford's nuclear model, which described the atom as having a central, positively charged nucleus surrounded by orbiting electrons.
The atomic model that portrays negative electrons embedded within a sea of positive material is known as the 'plum pudding' model. This model was proposed by J.J. Thomson in 1904. It describes an atom as being primarily composed of an unknown positively charged mass, with negative electrons interspersed within, akin to plums in a pudding.
Thomson's model was a significant step forward in atomic theory, but it was also fundamentally flawed. It was eventually superseded by the nuclear model of the atom, proposed by Ernest Rutherford and his colleagues in 1911. Rutherford's model proposed that most of the atom's mass and its positive charge is concentrated in a central nucleus, with the negative electrons orbiting this central core, rather like the planets orbit the sun. This model more accurately accounts for atomic behavior and structure as we understand them today.
#SPJ12
Carbon is a chemicalelement with a chemical symbol "C". It has an atomic number of 6. That means a carbon atom has 6 protons, 6 neutrons, and 6electrons. Since carbon is in the second row (or second period), it has 2 electron orbits. Use the clay to make your protons and neutrons in the nucleus.
However, some factors do influence its durability, like its matrix. Furthermore, the intense use of composites and environmental factors could affect its durability and potential applications.
Read more about carbon fibre:
b. four atoms of calcium.
c. two atoms of oxygen.
d. one atom of chlorine.
One atom of silicon is perfectly combined with the and forms silicon dioxide.
Further explanation:
Law of multiple proportions:
This law states that the molecule is a particle that is made up of two or more element. The elements are always combined in a ratio of fixed whole number.
Silicon has electron configuration so it can form 4 covalent bonds with other atoms.
One atom of silicon is combined with hydrogen in 1:4 ratio and form . This compound is known as silane. Thus silicon is not able to combine with three hydrogen atoms.
One atom of silicon is combined with calcium as calcium silicate and Calcium silicon . Therefore, silicon would not be able to combine with 4 calcium simultaneously.
One atom of silicon is combined with oxygen in 1:2 ratio and form . This compound is known as silicon dioxide. Thus silicon can combine with two oxygen atoms.
One atom of silicon is combined with chlorine in 1:4 ratio and form . This compound is known as silicon tetrachloride. Thus silicon is not able to combine with one chlorine.
Learn more:
1. Calculate the moles of chlorine in 8 moles of carbon tetrachloride: brainly.com/question/3064603
2. Which law states the direct relationship between volume and absolute temperature at constant pressure? brainly.com/question/1403211
Answer details:
Grade: Senior School
Subject: Chemistry
Chapter: Mole concept
Keywords: One atom of silicon, properly combined, three atom of calcium, one atom of chlorine and two atom of oxygen.
your answer is c. two atoms of oxygen.