Which of the physical properties below decrease with increasing atomic number for both the alkali metals and the halogens?
I. Atomic radius
II. Ionization energy
III. Melting point
A. I only
B. II only
C. III only
D. I and III only

Question

15-04-2015
Chemistry

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Which of the physical properties below decrease with increasing atomic number for both the alkali metals and the halogens?
I. Atomic radius
II. Ionization energy
III. Melting point
A. I only
B. II only
C. III only
D. I and III only

Sagot :

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