Webthe metallic character of the elements _____ moving from left to right across the periodic table, causing the corresponding oxides to be _____ acidic moving from left to right. ... period; group. the main group element arsenic has an incompletely filled _____ subshell, while the transition metal chromium has an incompletely filled ____ subshell ... WebJan 30, 2024 · Electron affinity increases upward for the groups and from left to right across periods of a periodic table because the electrons added to energy levels become closer to the nucleus, thus a stronger attraction between the nucleus and its electrons. ...
6.18: Electron Shielding - Chemistry LibreTexts
Webstays constant. effective nuclear charge: period. increases. across a period it gets larger. why does the effective nuclear charge: period increase. more protons in the nucleus so it attracts more outer electrons. electron shielding. -refers to inner electrons. -inner electrons block and shield the nucleus from attracting outer electrons. WebMar 25, 2024 · Therefore, ionic radii increase down a group as more shells are added (per period). 2. Electronegativity increases across a period. This is because the number of protons in the nucleus increases across the period. That causes attraction to bonding pairs of electrons more strongly. (Shielding effect or other factors aside, this is the simplest ... tracks to mb
Periodic Trends - Chemistry LibreTexts
WebSep 29, 2016 · Increases going right across periodic table because the nucleus gains protons and the atom has the same number of energy levels as you move across a period; 2. Shielding Effect. WebOct 25, 2016 · Across a periodic, the atomic radius decreases as the nuclear shielding stays the same. 1. Down a Group • The atomic radius increases for several reasons. (a) As you move down a group, the number of energy levels increases by 1. This makes the atom larger. (b) This increasing number of energy levels increases the nuclear shielding. WebFeb 5, 2024 · Study with Quizlet and memorize flashcards containing terms like In general for main group elements atomic radii _____ from left to right across a period and _____ down a group of the periodic table. Multiple choice question. a. decrease, increase b. increase, decrease c. increase, increase d. decrease, decrease, Why does atomic … theron naidoo