Chemistry
Explain the following:
Size of atoms progressively becomes smaller when we move from Sodium (Na) to Chlorine (Cl) in the third period of the Periodic Table.
Answer
Size of atoms progressively becomes smaller when we move from Sodium (Na) to Chlorine (Cl) in the third period of the periodic table because on moving from left to right in a period nuclear pull increases because of increase in atomic number and so the atomic size decreases.
Related Questions
Explain the following:
Halogens have a high electron affinity.
Explain the following:
The reducing power of an element increases down in the group while decreases in a period.
Name the periodic property which relates to the:
(a) amount of energy required to remove an electron from an isolated gaseous atom,
(b) character of element which loses one or more electrons when supplied with energy,
(c) tendency of an atom in a molecule to attract the shared pair of electrons.
This question refers to the elements of the Periodic Table with atomic numbers from 3 to 18. Some of the elements are shown by letters, but the letters are not the usual symbols of the elements.
3 4 5 6 7 8 9 10 A B C D E F G H 11 12 13 14 15 16 17 18 I J K L M N O P Which of these :
(a) is the most electronegative element ?
(b) is a halogen ?
(c) is an alkali metal ?
(d) is an element with valency 4 ?
(e) have least Ionisation Energy.
(f) have least atomic size in period 3.