A certain element has its outermost electron in a 2p subshell. It has valence +3 because...

A certain element has its outermost electron in a 2p subshell. It has valence +3 because it has 3 more electrons than a certain noble gas. What element is it? Express your answer using its one- or two-letter abbreviation.

Expert Solution

Answer is Boron - B
Its electronic configuration is [He] 2s2 2p1
It has total of 2 +1 excess electron than He, which makes its valency +3.

genius_generous answered 2 years ago

A certain element has its outermost electron in a 3p subshell. It has valence 13 because...

A certain element has its outermost electron in a 3p subshell. It has valence 13 because it has three more electrons than a certain noble gas. What element is it? Show diagram.

An unknown element is a nonmetal and has a valence electron configuration of ns2np4. a. How...

An unknown element is a nonmetal and has a valence electron configuration of ns2np4. a. How many valence electrons does this element have? b. What are some possible identities for this element? c. What is the formula of the compound this element would form with potassium? d. Would this element have a larger or smaller radius than barium? e. Would this element have greater or smaller ionization energy than fluorine?

Which element has a neon core and five valence electrons in its ground state electron configuration?

Give the valence electron configuration of the atom and monatomic ion of the element with the...

Give the valence electron configuration of the atom and monatomic ion of the element with the following ionization energies and name the elelment if its in the 3rd period. Explain why you make your selection: 1E1 1012 1E2 1900 1E3 2910 1E4 4960 IE5 6270 1E6 22200 1E7 27000 1E8 32500

Element A has a valence shell configuration of ns2np4 while Element B has a valence 7...

Element A has a valence shell configuration of ns2np4 while Element B has a valence 7 shell configuration of ns2np5 where n = energy level. Choose all of the following statements that are true regarding these elements assuming they are on the same period? i. Element A is less electronegative then element B ii. Element B has a lower first ionization energy then element A iii. Element A has a more negative electron affinity then element B iv. The atomic...

A. A main group element with the valence electron configuration 2s1 is in periodic group ....

A. A main group element with the valence electron configuration 2s1 is in periodic group . It forms a monatomic ion with a charge of . B. A main group element with the valence electron configuration 2s22p5 is in periodic group . It forms a monatomic ion with a charge of . Enter the type of subshell affected by the gain or loss of electrons. DO NOT enter the specific subshell. For example: If electrons are added to the 3p...

A. A main group element with the valence electron configuration 3s23p5 is in periodic group_______ ....

A. A main group element with the valence electron configuration 3s23p5 is in periodic group_______ . It forms a monatomic ion with a charge of ______. B. A main group element with the valence electron configuration 3s1 is in periodic group_____ . It forms a monatomic ion with a charge of _______.

In a certain compound, a mystery element, M, has sp2 hybridization. The orbital diagram for its valence electrons is shown below

In a certain compound, a mystery element, M, has sp2 hybridization. The orbital diagram for its valence electrons is shown below. How many σ bonds, π bonds and lone pairs does atom M form in this compound?σ π Lone pairsA) 1 2 0B) 0 3 1C) 1 1 0D) 2 0 2E) 2 1 1

Give the electron configuration for an element with 19 electrons. How many valence electrons does this element have?

How many valence electrons are there in an element with the following electron configuration? 1s2 2s2...

How many valence electrons are there in an element with the following electron configuration? 1s2 2s2 2p4 _______ has ____________ valence electrons

Question