which-of-the-following-statements-are-true1-selenium-se-has-the-electron-configu

Question

Which of the following statements are true?
1. Selenium (Se) has the electron configuration [Ar]4s²4d¹⁰4p³.
2. Silver (Ag) has the electron configuration [Kr]5s¹4d¹⁰.
3. Chromium (Cr) has the electron configuration [Ar]4s¹3d⁵.

Accepted Answer

2 and 3 only

Answer

1 only

Answer

2 only

Answer

3 only

Answer

1 and 2 only

Answer

1 and 3 only