In the periodic table elements are organized by atomic number, the number of pro

Question

In the periodic table elements are organized by atomic number, the number of protons in an atom. The vertical columns in a periodic table are called groups, while the horizontal rows are called periods. Atomic number increases from left to right across a period and from top to bottom down a group. A neutral atom has the same number of electrons as protons. You can use the atomic number to find the number of electrons in the neutral atom, and start building an electron configuration. The outer electron configuration of an element includes everything except the noble-gas core. For example, the element C has an electron configuration of [He]2s22p2 and an outer electron configuration of 2s2 2p2. The inner electron configuration of an element includes only the noble-gas core. The element C has the inner electron configuration of [He]. Classify each statement as true or false.

Explanation / Answer

group 8A has full s and p subshell - true

Valence electron of Group 6 A are in 7s subshell - false

TRUE FALSE Period 3 have inner electronic configuration as [Ne] Period 4 has 6 4p electrons Highest principle energy level of period 3 is 3 Highest principle energy level of period 2 is 3 The valence electron of group 1 A is in s subshell Period 4 has an inner electronic conf. of [Kr]

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