Which statement describes the distribution of charge in an atom?
The number of positively charged protons equals the number of negatively charged electrons, thus making the atom electrically neutral. So, the distribution of charge in an atom is thus one in which a positively charged nucleus is surrounded by one or more negatively charged electrons.
What would an atom that has a +1 charge would be called?
Protons have a charge of +1 and a mass of 1 atomic mass unit, which is approximately equal to 1.66×10-24 grams. The number of protons in an atom defines the identity of the element (an atom with 1 proton is hydrogen, for example, and an atom with two protons is helium).
Which part of an atom carries a neutral or no charge?
The nucleus has an overall positive charge as it contains the protons. Every atom has no overall charge (neutral). This is because they contain equal numbers of positive protons and negative electrons. These opposite charges cancel each other out making the atom neutral.
What is the overall charge of the nucleus?
The neutrons found in the nucleus have a neutral charge, however the protons are positively charged. Therefore the overall charge is positive.
Where are nucleus located?
Nucleus Location The cell’s nucleus is in the middle of the cell’s cytoplasm, the liquid that fills the cell. The nucleus may not, however, be right in the middle of the cell itself. Taking up about 10 percent of the cell’s volume, the nucleus is usually around the center of the cell itself.
What are the properties of nucleus?
General Properties of Nucleus
- Size. The nucleus is about 10,000 times smaller than the atom.
- Charge. The nuclei consist of protons and neutrons.
- Mass. Since the nucleus consists of protons and neutrons, the mass of the nucleus is the sum of masses of nucleons.
- Nuclear density.
- Nuclear spin and magnetic moment.
What is the function and structure of the nucleus?
The cell nucleus is a membrane-bound structure that contains a cell’s hereditary information and controls its growth and reproduction. It is the command center of a eukaryotic cell and is usually the most notable cell organelle in both size and function.
What is size of nucleus?
It is found that nuclear radii range from 1-10 ´ 10-15 m. This radius is much smaller than that of the atom, which is typically 10-10 m. Thus, the nucleus occupies an extremely small volume inside the atom. The nuclei of some atoms are spherical, while others are stretched or flattened into deformed shapes.
What is nucleus mass?
The mass of the nucleus is associated with the atomic mass number, which is the total number of protons and neutrons in the nucleus of an atom. The unit of measure for mass is the atomic mass unit (amu). One atomic mass unit is equal to 1.66 x 10-24 grams. Besides the standard kilogram, it is a second mass standard.
What are 2 differences between JJ Thomson’s model and Rutherford’s model?
J.J. Thomson’s plum pudding model of the atom had negatively-charged electrons embedded within a positively-charged “soup.” Rutherford’s gold foil experiment showed that the atom is mostly empty space with a tiny, dense, positively-charged nucleus.
What are two differences between the atomic theory described by Thomson and Rutherford?
Thomson’s theory included the atoms having electrons, while Rutherford’s said that atoms have a nucleus and electrons orbit the nucleus. the two differences are where the electrons ARE and nucleus or no-nucleus. the current model of an atom has a nucleus in the center, and many electron clouds orbiting around it.
Who said electrons are scattered around the nucleus at a distance?
scientist Niels Bohr