Last Updated 21 Apr 2020

Chemical element

Essay type Research
Words 338 (1 pages)
Views 169

True The half-lives of unstable isotopes vary from milliseconds to billions of years. The combining of atoms is known as nuclear fusion.

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. The true statement concerning the atomic nucleus is: It is made up of electrons only. The element has how many protons? 7 has how many neutrons? 146 Which statement is true? Isotopes of a given element have very similar chemical properties. The atomic number of an atom is equivalent to the number of: protons Rutherford coined the term used for the simplest positive charged particle and called it the: neutron An alpha particle is: an electron Select all that apply. In the vertical columns of the periodic table: All the physical properties are identical.

The number of positive charges in the nucleus of an atom is equal to: its atomic number Most of the mass of an atom is made up of: The protons and neutrons Movement of electrons about a central nucleus is a concept by: Boor Periodicity is best defined as: The repeating nature of physical and chemical properties with increasing The last element in any period always has: eight electrons in the outermost energy level The maximum number of electrons in a p sub-level is: 3 The 3 in up represent TTS: the number of electrons Name the element that corresponds to the following electron configuration

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Chemical element. (2018, Apr 14). Retrieved from

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