Examlex
Which of the following does not have the same number of valence electrons as the other three elements?
Vygotsky
Lev Vygotsky was a Soviet psychologist known for his work on psychological development in children, emphasizing the roles of cultural and social interactions.
Importance Of Play
Refers to the vital role that playing has in the cognitive, physical, emotional, and social development of children.
Their Peers
Refers to individuals who are at the same level or rank in a specific context, often of similar age or status.
Younger Siblings
Children born later in their family, who may experience different parental expectations and family dynamics than their older siblings.
Q2: The HCO₃- ion is called _.<br>A) carbide<br>B)
Q10: CH₂ClF
Q32: The melting and freezing points are identical
Q40: S<sup>4+</sup><br>A)1s<sup>2</sup>2s<sup>2</sup>2p<sup>6</sup>3s<sup>2</sup><br>B)1s<sup>2</sup>2s<sup>2</sup>2p<sup>6</sup>3s<sup>2</sup>3p<sup>2</sup><br>C)1s<sup>2</sup>2s<sup>2</sup>2p<sup>6</sup>3s<sup>2</sup>3p64s<sup>2</sup><br>D)1s22s<sup>2</sup>2p<sup>6</sup>3s<sup>2</sup>3p<sup>1</sup><br>E)1s<sup>2</sup>2s<sup>2</sup>2p<sup>6</sup>3s<sup>2</sup>3p<sup>4</sup><br>F)1s<sup>2</sup>2s<sup>2</sup>2p<sup>6</sup>3s<sup>2</sup>3p<sup>6</sup><br>G)1s<sup>2</sup>2s<sup>2</sup>2p<sup>6</sup><br>H)1s<sup>2</sup>2s<sup>2</sup>2p<sup>6</sup>3s<sup>2</sup>3p<sup>5</sup>
Q51: Which has more electrons?<br>A) Br-<br>B) Sr <sup>2+</sup><br>C)
Q82: What is the molecular shape of NO₂-<br>A)
Q86: Sodium is the least electronegative in the
Q121: Which of the following equations does not
Q176: When vaporized into steam water molecules decompose
Q220: The empirical formula is never equal to