Chemistry

Chemistry, 22.07.2019 11:30, talanna394

An atom has 143 neutrons, 92 protons, and 91 electrons. what element is it?

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Physics, 01.07.2019 08:30, carlydays4403

How many protons, neutrons, and electrons does a neutral atom of this element have? (round atomic mass to nearest whole number) the element is "ai" protons: 13 neutrons: 14 electrons: 13 protons: 14 neutrons: 27 electrons: 13 protons: 27 neutrons: 13 electrons: 14 protons: 13 neutrons: 13 electrons: 13

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Biology, 07.07.2019 11:30, travashouston4873

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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Chemistry, 28.07.2019 03:50, manco6

5questions to answer 1) electrons are transferred in the formation of bonds. a) ionic b) covalent c) metallic d) all chemical 2) which pair below describes isotopes of the same element? a) an atom with 6 protons and 8 neutrons - an atom with 8 protons and 6 neutrons b) an atom with 6 protons and 6 neutrons - an atom with 6 protons and 7 neutrons c) an atom with 8 protons and 8 neutrons - an atom with 7 protons and 8 neutrons d) an atom with 7 protons and 6 neutrons - an atom with 6 protons and 6 neutrons 3) describe the composition of the nucleus of an atom. a) it is composed of protons. b) it is composed of protons and neutrons. c) it is composed of protons and electrons. d) it is composed of protons, neutrons, and electrons. 4) reactant → product if there are 4 grams of reactant, how many grams of product are produced by the chemical reaction? a) 0 grams b) 2 grams c) 4 grams d) 8 grams 5) 2na + cl2 → 2nacl sodium and chlorine combine to form table salt. given the chemical reaction, how many grams of 2na + cl2 would be required to produce 4 grams of table salt? a) 2 grams b) 3 grams c) 4 grams d) 8 grams

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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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An atom has 143 neutrons, 92 protons, and 91 electrons. what element is it?...

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