Periods : Elements in Rows , Horizontal , Energy levels , Become less metallic as they move across, Moves from left to right , Orbitals or shells, Groups : Elements in Families , Elements that are similar , Valence Electrons , Reactivity , Vertical , Columns ,

Characteristics of Periods and Groups

द्वारा

लीडरबोर्ड

दृश्य शैली

विकल्प

टेम्पलेट स्विच करें

ऑटो-सेव पुनःस्थापित करें: ?