Give reasons for the following :
(any one)
(a) Nucleus of an atom is heavy and positively charged ?
(b) An atom is electrically neutral ?
Answers
Answered by
15
(a) Nucleus contains protons (positive) and neutrons (neutral), which have a mass of 1 amu each.These sub-atomic particles are responsible for the whole mass of the atom.Due to the presence of the positively charged protons in the nucleus, it is positively charged.
(b)In an atom, the number of positive charges (protons) and the number of negative charges (electrons) are equal. Thus an atom is electrically neutral.
Answered by
6
a) Yes, the nucleus of an atom is heavy and positively charged because the atom contains 2 subatomic particles they are the protons and neutrons. ... As because of the protons and the neutrons the atom is heavy and due to the presence of the protons which are positively charged the atom is positively charged.
b) Atoms are electrically neutral because they have equal numbers of protons (positively charged) and electrons (negatively charged). If an atom gains or loses one or more electrons, it becomes an ion
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