period 3

Question 31 - Question: Of the elements in the 3 rd period, why is chlorine the most non-metallic? Answer: In the 3 rd period, chlorine has the highest ionization potential and the smallest size (except for Argon). When the atom size is small and ionization p..

There are seven periods in the periodic table and each period starts with a different principal quantum number. The first period corresponding to 'n' = 1 consists of only two elements hydrogen (1s 1 ) and helium (1s 2 ). This is because the first energy shel..

A sine graph with amplitude 1 and period 30° is translated 3 units up. Identify the equation of the graph after transformation. => y = sin 8 θ + 4 or y = sin 12 θ + 3 or y = sin 3 θ + 12 or y = sin 12 θ - 3..

1. First period The first period has two elements - hydrogen and helium. 2. Second and third period The second and third periods are known as short periods. Each consists of eight elements. The second period starts..

Which of the following sinusoids has amplitude 4, period 3 π and is passing through (0, 0)? => y = 4 sin 2 x or y = 4 sin 3 x 2 or y = 4 sin 2 x 3 or y = 4 sin 3 x..

A sine graph with amplitude 3 and period 90° is translated 2 units down. Identify the equation of the graph after transformation. => y = 3sin 2 θ + 2 or y = 3sin 4 θ - 2 or y = 3sin 2 θ - 2 or y = 3sin 4 θ + 2 o..

The position of an element in the periodic table is generally determined by its electronic configuration e.g. electronic configuration of sodium is 2, 8, 1 i.e., it has three shells and one electron in the outermost shell. Hence, it is placed in period number 3 and gro..

Main Features of Modern Periodic Table - 1. The modern periodic table is divided into two main categories: (i) Vertical columns called Groups and (ii) Horizontal columns called Periods. 2. There are 18 vertical columns or groups. These are further sub-divided into A an..

Periodic Table and Valency of Elements - a) Group IA, IIA and IIIA consists of metals of normal elements. They have 1, 2, or 3 valence electrons which they can easily donate to acquire the configuration of nearest noble gas. They become positively charged i.e., cation..

1.Chlorine is placed second after fluorine in group VIIA. 2. Other members of this group are fluorine, bromine, iodine and astatine (the last member is radioactive). 3. Members of this group are called 'halogens' meaning salt producers. 4. Atoms of halogens have seven electro..