Chemistry

Chemistry, 25.07.2019 17:00, davidsantos3121

How many neutrons does x have if it’s atomic number is 28 and it’s mass number is 71

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Chemistry, 12.07.2019 04:30, cruzhazeL999

98 points hurry in 1913, henry moseley discovered a way to calculate the atomic number for each element and it was determined to arrange the periodic table by atomic number and not atomic mass. why is atomic number the better way to organize the elements of the periodic table and not organizing by atomic mass? question 12 options: the atomic number can vary based on the number of neutrons the atoms of the same element have, so the atomic mass may not be in order. also, the atomic mass is unique to each element. the atomic number and atomic mass are equivalent, so the atomic number is used because it is a smaller number. the atomic mass can vary based on the number of neutrons the atoms of the same element have, so the atomic mass may not be in order. also, the atomic number is unique to each element. the atomic number can be different for atoms of the same element, so it makes the patterns of the periodic table more varied.

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Chemistry, 02.08.2019 12:00, nyny679

Part 1: mission preparation: use the following word bank to complete the sentences accurately. atomic mass protons column electrons atomic number neutrons row 11 12 23 a. the of an element includes atomic number plus the number of neutrons. b. the atomic number represents the number of and in an element. c. elements found in the have similar chemical properties. d. an element with an atomic number of 11 and an atomic mass of 23 will have neutrons total.

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Chemistry, 18.09.2019 10:50, marqueen1

Atomic mass protons column electrons atomic number neutrons row 11 12 23 a. the of an element includes atomic number plus the number of neutrons. b. the atomic number represents the number of and in an element. c. elements found in the have similar chemical properties. d. an element with an atomic number of 11 and an atomic mass of 23 will have neutrons total. pls i'll give 20 points

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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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How many neutrons does x have if it’s atomic number is 28 and it’s mass number is 71...

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