Label each of the statements below as true or false. Ionization energy is the ab
ID: 592544 • Letter: L
Question
Label each of the statements below as true or false. Ionization energy is the ability of an atom to attract electrons. Electronegativity is the energy required to remove electrons. Elements 58-71 are called lanthanides. potassium has a high first ionization energy but a low second ionization energy. Elements in the same group have similar chemical properties. Transition elements are found in groups 3-12. Mendeleev arranged elements in order of increasing atomic mass. Elements lose electrons to form a negative ionExplanation / Answer
Ionisation energy is the energy to remove one valence electron from its outermost shell. It is false.
The electronegativity is the ability of n atom to attract electrons. Hence the true statements of the electronegativity and the Ionisation energy are swapped in these statements. Electronegatiivity is the ability to pull an covalent bond pair of electrons towards itself. It is also false.
The elements between 58-71 are called lathanides starting from lanthanum to lutetium. True.
The potassium has the low first ionisation energy and the second ionisation energy is significantly high. THe removal of first electron makes the K(+) configuration resembling that of the inert gas making the further removal of electron unfavourable. Hece the statement is false.
Elements in the same group have same chemical properties. THis is true for the periodic table in general.True statement.
THe transition metals havng incompletely filled d orbitals are found in groups 3-12.true statement.
Mendeleev arranged the elements in the order of increasing atomic mass. THis is true.
Elements loose electron to form a cation, not an anion. Hence the statement is false.
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