Chemistry, 26.10.2020 14:00 syrai7404

Are these statements true or false? Correct the statements that are false. a ..An atom is larger than the cell of a living thing.
b.. Different kinds of elements have different kinds of atoms.
c..The protons, neutrons and electrons are different for different kinds of atoms.
d... An atom always has the same number of protons and electrons.
e... An atom always has the same number of protons and neutrons.
f Atoms have no mass because they are very small.
Q2 .Compare the Rutherford's model and the Bohr's model of the atom. State one similarity and one difference between them.
Q3..what observation from rutherford's gold foil experiment made him conclude that an atom has a tiny but dense nucleus that is positively charged?
Q4.. Explain why the nucleus of an atom is positively charged, while the atom is electrically neutral.
Q5...The symbols and atomic numbers of three elements are as follows:
Ne Atomic number 10
A/ Atomic number 13
K Atomic number 19
a.. identify each element from its symbol.
b.. How many protons and electrons does an atom of each element have?
c.. Draw the electronic structure of the atom of each element.

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