Chemistry

Chemistry, 27.08.2019 15:00, Staceyrycz2772

If an atom has an atomic number of 8 and a mass number of 18, how many protons, neutrons, and electrons are in the atom?

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1)if a boron atom has 5 protons, 6 neutrons, and 5 electrons, it has a mass of a)11 b)10 c)6 2)the atomic number of an atom is the total number of in the nucleus. a)protons and electrons b)protons c)neutrons 3)a lithium atom has 3 protons, 3 neutrons, and 3 electrons. which of the following sets of particles represents and isotope of this atom? a)4 protons, 3 neutrons, and 4 electrons b)3 protons, 4 neutrons, and 3 electrons c)4 protons, 4 neutrons, and 4 electrons

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Me true or false 1) an atom has no mass 2) an electron is the largest part of an atom 3) all atoms have the same mass 4) all protons have the same mass 5) all oxygen atoms have the same mass 6) an oxygen atom has the same atomic number as a hydrogen atom 7) to find the atom mass of an atom, we add the protons an electrons 8) the atomic number of an atom is the number of neutrons it has 9) atoms of the same kind that have different numbers of neutrons are called isotopes 10) atomic number = atomic mass

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Chemistry, 02.09.2019 14:10, COOLIOMARIS

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Physics, 02.10.2019 11:00, krocker58

1. what information does the atomic mass of an element provide? a.the sum of electrons and protons in atom b.the difference between the number of protons an electrons c.the numbers of isotopes d.the number of protons and neutrons in a item 2.how do scientist determine the number of neutrons in an item? a.they find the number of protons b.they add the umber of electrons to protons c.they divide the atomic mass of two d.they subtract the atomic number from the atomic mass 3.how many protons are in a element with an atomic number of 8 and a mass number of 18? a.8 b.18 c.10 d.3 4.two atoms are that are isotopes of one number must have the same number as what? a.neutrons b.atomic mass c.protons d.all particles 5.the modern periodic table is organized by number? a.developing b.decreasing c.reducing d.increasing if all questions are answers correctly i will be giving out a huge prize to that person so they could get pro and receive 500 points -your friend queen

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If an atom has an atomic number of 8 and a mass number of 18, how many protons, neutrons, and electr...

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