Chemistry
Chemistry, 16.09.2019 05:30, wanderlay29

What is the mass number of element in an atom that has 20 protons and 17 neutrons?

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Chemistry, 24.06.2019 21:30, Hrjohnson2004
1. an isotope is an atom of an element that differs in its number of a. protons b. neutrons c. eletrons 2. what determines what element an atom is? a. the number of protons and neutron in an atom b. the number of electrons in the atom c. the number of neutrons in the atom d. the number of protons in the atom 3. which of the following contributes to the mass number? a. number of protons and neutrons b. number of protons only c. number of neutrons and electrons d. number of protons and electrons
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Chemistry, 02.09.2019 14:10, COOLIOMARIS
match the correct term with the definition question 1 options: the neutrally charged element in the nucleus of an atom the number of protons an atom has an atom of an element that has a different number of neutrons that the standard atom of that element protons + neutrons in the nucleus of an atom the positive particle in the nucleus of an atom 1. atomic mass 2. neutron 3. atomic number 4. proton 5. isotope identify the atomic number and atomic mass of the following element question 2 options: number: 35.453 mass: 17 number: 17 mass: 18 number: 18 mass: 17 number: 17 mass: 35.453 which atomic particle gives an atom gives it it’s chemical properties? question 3 options: protons isotopes neutrons electrons all atoms of an element always have the same number of question 4 options: neutrons electrons protons electrons how many protons, neutrons, and electrons does a neutral atom of this element have? (round atomic mass to nearest whole number) question 5 options: protons: 13 neutrons: 13 electrons: 13 protons: 13 neutrons: 14 electrons: 13 protons: 27 neutrons: 13 electrons: 14 protons: 14 neutrons: 27 electrons: 13 a neutral atom of an element has the same number of and question 6 options: protons and electrons neutrons and electrons protons and neutrons which of the following is are isotopes of carbon? (carbon has an atomic number of 6 and an atomic mass of 12) question 7 options: only b is an isotope a and c are isotopes a and b are isotopes b and c are isotopes
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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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What is the mass number of element in an atom that has 20 protons and 17 neutrons?...

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